It's hard being a celebrity these days. It's not enough to just act or sing -- one often needs to also have various other brand extensions to stay in the limelight. So what's an obvious field? Why, food, of course.
Check out these 15 celebrities that are food experts (or at least claim to be).
Gwyneth is probably the first person many people think of when they hear the words "food" and "celebrity." She's published two cookbooks and has graced the cover of Bon Appetit.
Food Authority Grade: B+, with hesitation. Look, we know that her diet suggestions can be ridiculous and unrealistic. And sometimes we even make fun of her. But the thing is, even if you disagree with her, she actually backs up what she's talking about. Her lifestyle may be far from ours, but at least she isn't just pretending.
Food Authority Grade: B. Larter's recipes are healthy and approachable -- we'd definitely make many of these at home. But they are also relatively simple (do we need yet another meatball recipe?). Would she have a cookbook if not for her celeb status? No.
Food Authority Grade: C. Getting a cookbook deal counts for something but Duff's blog is all over the place. Her restaurant reviews are barely reviews and her recipes leave a bit to be desired (how much tuna? Does "Half of one lemon juice" mean "the juice of of half a lemon?").
Food Authority Grade: A. Because Stanley Tucci can do no wrong, even if we sometimes confuse him with his "Big Night" character. We want him at our dinner table.
Obviously, Sheryl Crow titled her cookbook "If It Makes You Healthy." After her battle with breast cancer, Crow was inspired to eat healthy and in-season.
Food Authority Grade: B. In addition to her cookbook, Crow is also an anti-hunger advocate and does a lot of work with the World Food Program.
Like Sheryl Crow, Eva Longoria's interest in food goes beyond recipes. She was the Executive Producer for several films about farm workers' rights. But yes, the "Desperate Housewives" star also does have a cookbook.
Food Authority Grade: B+. We'll give Longoria credit for working with films that have an important story to be told. And her recipes aren't bad, either... just not ground-breaking.
Lauren Conrad's lifestyle website features a "dine" section with recipes such as chicken soup and spiked cider. The photography is actually quite good, and often includes photos of Lauren cooking.
Food Authority Grade: B-. Conrad's blog is one of the nicer-looking celeb lifestyle blogs out there. If you need easy entertaining tips, her blog isn't a terrible place to start.
Food Authority Grade: C+. If you're a vegan or interested in vegan food, Silverstone offers useful tips and lifestyle advice. But if you're not, you won't find much in common, food-wise.
From country start to Food Network star! Trisha Yearwood has two cookbooks under her belt and a cable show called "Trisha's Southern Kitchen" to boot.
Food Authority Grade: B+. Having a Food Network show doesn't guarantee that you're a bonafide food expert, but it does mean that the recipes are reliable... even if we occasionally question why anyone would make them.
Zac Posen may be a force to reckon with in the fashion world, but it turns out he's quite the home cook as well. Take a look at his Instagram feed for proof.
Food Authority Grade: B. Based on his photos, we'd love to attend a dinner party at Zac's house. Especially if he makes this.
Food Authority Grade: B. The Jenny Craig ambassador knows what she's doing, but we don't really need yet another healthy eating guru.
Real Housewives: Teresa Guidice, Lisa Vanderpump, Kathy Wakile, Bethenny Frankel
We're grouping all of these ladies into one since they have all used the "Real Housewives" franchise to extend their supposed food expertise further. Are they all the same? Well, no. But do we need another brand extension of the Skinnygirl line or more Italian cooking advice from Teresa Guidice? Also no.
Food Authority Grade: C-. Just because the ones that don't have any business claiming they know about food bring down the ones that do.
The "Entourage" star co-founded SHFT, an online platform that encourages a more sustainable lifestyle. The website discusses a range of contemporary food issues such as GMOs. Grenier also occasionally blogs for The Huffington Post about food environment topics such as bluefin tuna extinction.
Food Authority Grade: B. Grenier knows his way around important food issues and uses his fame to draw attention to important causes... but we're not expecting his advocacy to cross over into cookbook territory anytime soon.
In 2008, Gloria Estefan and her husband Emilio debuted Estefan Kitchen, a collection of Cuban recipes. The couple has owns Bongos, a Cuban restaurant in Miami, among others.
Food Authority Grade: B+. Estefan's Cuban roots are well-documented and while her restaurants may get lukewarm reviews, she's proven through her multiple businesses that food is an important part of her life.
Jerry Seinfeld's wife is the author of twocookbooks -- one for novice chefs and one for parents who want to sneak more vegetables into their kids' food. Her website, Do It Delicious, is a useful resource for beginner cooks.
Food Authority Grade: A-. We wish that Seinfeld would treat vegetables as something that don't need to be hidden away, but we get that kids can be kids sometimes.