Joan Holloway of "Mad Men" has taught us many things (most notably, if your nutty husband pisses you off, hit him with a vase). But it's Christina Hendricks, the woman behind Joan, who really has the most real-life fashion wisdom to impart.

In the latest issue of Lucky, Hendricks reveals that she can actually go braless -- sometimes:

A fan of strapless dresses, she has especially warm feelings for pieces that are so well-constructed they don’t require a bra. "Christian Siriano makes his dresses that way," she says gratefully. "It makes me feel so taken care of."

No bra at all? That is impressive (and totally explains all those Christian Siriano dresses). But as any woman with a sizable chest knows, wearing a bra is essentially non-negotiable. Christina is quick to add:

Her nightmare? A salesperson suggesting an unstructured piece that can’t accommodate a bra. "I want to say, 'Excuse me, but are we standing in the same store?'"

That sounds more like it. Christina has spoken about her figure before, admitting that a larger bra size can be very "inconvenient." As she told the Daily Mail in 2011, "Having larger breasts has made it harder for me to shop throughout the years, but I've learnt to love it." It's made it hard for her to buy bathing suits -- "You either get smooshed down or there's no support," she said to Lucky in 2011 -- and red carpet dresses.

But thank goodness for built-in undergarments by Christian Siriano. Now if only Christina could tell us where to find similar dresses at a not-so-designer price...

Read more from Christina in the June/July issue of Lucky, on newsstands May 21.

PHOTOS:

christina hendricks bra

christina hendricks bra

Let's talk about... boobs:

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  • Sofia Vergara

    "I mean, a normal girl will just put the dress on and leave. I need them to be like an armory. My dresses are like a work of art inside because, you know, I am 40 years old, I had a baby, and I am a 32F boob," <a href="http://www.huffingtonpost.com/2013/03/18/sofia-vergara-bra-size_n_2901248.html" target="_blank">Vergara told Vogue. </a>

  • Snooki

    Snooki commented on the effects of pregnancy by saying, "If I were to get any surgery — I've never been under the knife before, so it's very terrifying — I do want to get my boobs done eventually. Now they're just a flap of skin."

  • Lady Gaga

    She told <em>New York Magazine</em>, "When I was in school, I was 15 to 20 pounds heavier than I am now and my breasts were bigger, and firm and delicious."

  • Miley Cyrus

    She told <em>Glamour </em>in 2009, "One thing that bugs me is people who say, 'Miley really needs to lose some weight,' or 'She got her boobs done.' I did start out really skinny, but you're not going to have boobs when you're 12."

  • Jennifer Love Hewitt

    "I need, like, an insurance invitation. If somebody was like, 'Hey, you know what? We would like to insure your boobs for $2.5 million dollars,' I'd be like, 'Do it. Love it! Why not?'" <a href="http://www.usmagazine.com/celebrity-body/news/jennifer-love-hewitt-jokes-that-her-boobs-are-worth-5-million-2013103" target="_blank">Hewitt told USA Today</a>, adding, "These things right here are worth $5 million!"

  • Katy Perry

    "I'm generally around 130 pounds, which is totally fine for me. But when I was a kid, I was the same height and weighed more like 145. And I had enormous boobs that I didn't know what to do with, so I wore minimizers, which were not cute. Those thick-ass straps! I got made fun of for the over-the-shoulder boulder holder...and all I wanted was to look like Kate Moss. Little did I know that these things would come in handy someday," <a href="http://www.elle.com/pop-culture/cover-shoots/fantastic-voyage-2" target="_blank">Perry told Elle.</a>

  • Jessica Simpson

    "My boobs are way too big to run at this point. I'm just walking," Simpson <a href="http://www.huffingtonpost.com/2012/09/05/jessica-simpson-body-not-bouncing-back-supermodel_n_1857390.html" target="_blank">told USA Today</a> four months after giving birth to her first child.

  • Lea Michele

    "These babies are great," Michele <a href="http://www.marieclaire.com/celebrity-lifestyle/celebrities/lea-michele-interview.">told Marie Claire of her breasts</a>. "They are my prizewinners. For a while they were out and about, showing off on Broadway every night, then they came to L.A. and were like, ‘No one else looks like me here!’ They were nervous to make their appearance but feel they’ve earned their place. So they asked if they could come out, and I was like, ‘All right, you guys.’ They definitely rose to the occasion, so I’m going to continue to give them more opportunities.”

  • Britney Spears

    She told the <em>Daily Star</em> in 2008, "I have a love-hate relationship with my boobs. At the moment I hate them. I want them smaller."

  • Amber Riley

    "I don't deprive myself. But I want to be healthy. I love my breasts, my face, my butt. I love myself," Riley said, <a href="http://wonderwall.msn.com/tv/who-said-it-glee-edition-21658.gallery?photoId=94212">according to Wonderwall</a>.

  • Dolly Parton

    "My breasts have served me well. I don't know if I'm supporting them or they're supporting me. But of course I've had them jacked up a bit. And they're part of the persona. It always takes a bit of pressure off me." (<a href="http://edition.cnn.com/2009/SHOWBIZ/Music/11/04/dolly.jessica.breasts/">via CNN</a>)

  • Sofia Vergara

    “I know [my breasts] have opened doors for me, let’s be real," <a href="http://www.luckymag.com/magazine/2012/11/sofia-vergara#slide=1">Vergara told Lucky magazine</a>. "But I so hate when I see Gisele and she is wearing a tiny little tank top with no bra, like, ‘Oh, I just threw this on, I look so cute.’ If I wore that I would look like I was pregnant, or a fat stripper.”

  • Kate Upton

    "My one wish... I would have smaller boobs. Just kidding! Hahaha," <a href="http://www.gq.com/women/photos/201207/kate-upton-gq-july-2012-cover-story">Upton laughed to GQ</a> in July.

  • Nicki Minaj

    On the night she had a wardrobe malfunction in the UK, Minaj told the crowd, "This is our first show so excuse any boobs popping out or any penises popping out!"

  • Christina Hendricks

    "I’m learning to celebrate what I was born with, even though it’s sometimes been inconvenient. Having larger breasts has made it harder for me to shop throughout the years, but I’ve learned to love it," <a href="http://www.dailymail.co.uk/home/you/article-1388042/Christina-Hendricks-life-shaping-nicely-Im-learning-celebrate-I-born-with.html">Hendricks told the Daily Mail</a>, adding, "It’s so bizarre that people are constantly asking if my breasts are real or fake. They’re so obviously real that anyone who’s ever seen or touched a breast would know."

  • Jennifer Love Hewitt

    “It’s horrible to say, but I like my boobs," <a href="http://www.maxim.com/girls-of-maxim/april-2012-cover-girl-jennifer-love-hewitt-interview">she told Maxim magazine in 2011</a>. "They’ve always served me well. They’re good.”

  • Jessica Simpson

    “Been getting lots of questions about this alleged breast reduction…not to worry…I LOVE MY BOOBIES!! They aren’t going anywhere!" Simpson tweeted in 2011. (<a href="http://abcnews.go.com/blogs/entertainment/2011/09/jessica-simpson-loves-her-boobies/">via ABCNews</a>).

  • Scarlett Johansson

    “I would never have a boob job. I get compliments about them but I have my parents to thank for them," Johansson said (<a href="http://www.entertainmentwise.com/news/41083/scarlett-johansson-i-love-my-boobs">via Entertainmentwise</a>). "I think they could win awards, you know!”

  • JWoww

    "I want my boobs out," JWoww said about her wedding dress (<a href="http://www.azcentral.com/ent/celeb/articles/20120930jwoww-wedding-dress.html">via azcentral.com</a>). "I want a corset looking top and then the bottom to really poof out. I really want something sexy with a princess feel."

  • Kim Kardashian

    “I remember crying in the bathtub. I took a washcloth, made it hot, put it over my chest and prayed, ‘Please don’t let them grow any bigger. They’re embarrassing me,'" <a href="http://www.eonline.com/news/181591/kim-kardashian-cried-over-growing-boobs">Kim wrote on her blog</a>. "All my friends were super skinny, and that just wasn’t my body type. But I watched my mom, who was always comfortable with herself, and she helped me with my outlook.”

  • Heidi Montag

    “Giving my self a soft tissue breast massage," <a href="https://twitter.com/heidimontag/status/23247380709">she tweeted</a>. "Ladies we have to keep those implants soft.”

  • Keira Knightley

    "Sometimes they make [my boobs] a lot bigger than they actually are," <a href="http://www.celebuzz.com/video-post/keira-knightley-talks-about-her-small-breasts-on-ellen/">Knightley told Ellen DeGeneres about photographers and editors.</a> "I'm happy with them the size they are, but I'm alright with [Photoshop] unless they make them really droopy.

  • Dolly Parton

    She rapped once, "I don't hip and I don't hop. I'd black both eyes with this big top."

  • Katy Perry

    She told <em>Rolling Stone</em>, "I started praying for [breasts] when I was, like, 11. And God answered that prayer above and beyond, by, like, 100 times, until I was like, 'Please, stop, God. I can't see my feet anymore. Please stop!'"

  • Kirsten Dunst

    “Yes, I do have big boobs. People don’t realize because I cover up a lot, but they are there. Big boobs," Dunst said (<a href="http://www.vh1.com/celebrity/2011-08-18/kirsten-dunst-wants-you-to-know-that-she-has-big-boobs/">via VH1</a>).

  • Shakira

    "Lucky that my breasts are small and humble, so you don't confuse them with mountains." Lyrics to Shakira's song "Whenever, Wherever."

  • Pamela Anderson

    She told <em>Marie Claire</em>, "I haven't reinvented myself. I've always been authentic except for the boobs."

  • Rihanna

    She told Ryan Seacrest when asked about losing weight, "It's actually pretty annoying. Now I don't have no butt, no boobs -- already had no boobs... so annoying!"

  • Kate Upton

    She told Esquire, "When finally I went through my growth spurt, and they appeared, and I just... I loved them. So that's why I like boobs, because I didn't have them, and then I got 'em.'"

  • Kelly Rowland

    The singer told British Cosmo she had a breast job when she said, "I said in an interview a long time ago that I'd get it done because I just had little nuggets for boobs and it was bothering me."

  • Celebrity Side Boobs Exposed

    As Lady Gaga steps out in Buenos Aires wearing a very low-cut leotard, we check out some other celebrities who have also revealed a bit too much!

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