Forbes compiles its annual Celebrity 100 list by looking at both the pretax income (from May 1, 2011 to May 1, 2012) and fame of Hollywood's biggest and brightest stars -- meaning how often we see their names and faces on TV, in movies and online, as well as their social media following.
Taking all of that into consideration, Lopez is sitting pretty atop the high-powered list, and it's no surprise, especially after the banner professional year she's had. According to Forbes, Lopez brought in $52 million in earnings over the past year, and when that's added to her star power, it's clear to see she's no longer just a singer -- she's a brand, and has ample avenues to promote her various endeavors.
Whether she's judging "American Idol," filming a new music video, promoting a new film or chatting about her ex-husband Marc Anthony (or current boyfriend Casper Smart), it's hard to miss Lopez in the entertainment world these days -- and easy to see why Forbes considers her today's top celebrity.
Trailing behind Lopez is Oprah Winfrey, who brought in a whopping $165 million in the past year. She may have ended her talk show in 2011, but she has continued to create headlines thanks to her OWN cable network -- though she may not have the everyday media presence Lopez seems to command.
Justin Bieber lands at No. 3 on Forbes' list and while he's only 18 years old, it's no surprise that the entertainer and mogul-in-training -- he made $55 million in the last year -- made the cut. After all, he makes hundreds of millions of young fans scream on a daily basis.
Rihanna and Lady Gaga round out the No. 4 and No. 5 spots, respectively, on Forbes' 2012 list.
Other stars making the Celebrity 100 list include first-timers Kim Kardashian (No. 7, with $18 million and lots o' divorce drama), Khloe Kardashian (No. 73, with $11 million and a popular reality show) and the one and only Ashton Kutcher, whose personal divorce drama and professional gain with a role on "Two and a Half Men" helped him land on the list for the first time at No. 51, with $24 million in earnings.
Halle Berry and fiance Olivier Martinez were seen leaving Whole Foods after buying a cart full of groceries in West Hollywood, Calif., on May 20.
Marion Cotillard posed on the red carpet for the screening of the film "Blood Ties" at the 66th edition of the Cannes Film Festival in Cannes, France on May 20.
Jennifer Lopez looked amazing at the Billboard Music Awards held at The MGM Grand Garden Arena in Las Vegas, Nev., on May 19.
Miley Cyrus wowed at the Billboard Music Awards held at The MGM Grand Garden Arena in Las Vegas, Nev., on May 19.
Ashton Kutcher and Mila Kunis were spotted holding hands in London on May 19.
Garrett Hedlund, Justin Timberlake and Carey Mulligan attended the "Inside Llewyn Davis" photocall at the 66th Cannes Film Festival, in Cannes, France on May 19.
Camila Alves-McConaughey and Ramshackle Glam's Jordan Reid co-hosted INC's Macy's Fashion Show in Las Vegas, Nev., on May 18.
Keith Urban strolled through LAX Airport with his daughter Sunday Rose in Los Angeles, Calif., on May 17.
Dianna Agron and a female friend were seen out and about in SoHo, New York City on May 17.
Isla Fisher attended the Opening Ceremony and premiere of "The Great Gatsby" during the 66th Annual Cannes Film Festival at Palais des Festivals on May 15 in Cannes, France.
Emma Stone stepped out in New York City on May 15 looking adorable as always.
Leonardo DiCaprio, Carey Mulligan and Baz Luhrmann posed together at "The Great Gatsby" photocall at the 66th Cannes Film Festival on May 15.
A very pregnant Penelope Cruz and her brother Eduardo visited their sister Monica at the hospital after she gave birth to a baby girl on May 14 in Madrid, Spain.
Zoe Saldana looked incredible at the "Star Trek Into Darkness" premiere held at The Dolby Theatre in Hollywood, Calif., on May 14.
Nicole Kidman arrived at the Martinez Hotel in Cannes, France to attend a photocall of the Jury on the eve of the 66th edition of the Cannes Film Festival on May 14.
Katie Holmes was spotted on the set of "Mania Days" in New York City on May 14.
Emma Watson arrived on a flight at the Nice Airport on May 14 to attend the upcoming 66th Annual Cannes Film Festival in France.
Lea Michele attended the FOX 2013 Programming Presentation Post-Party at Wollman Rink Central Park in New York City on May 13.
Angelina Jolie revealed that <a href="http://www.huffingtonpost.com/2013/05/14/angelina-jolie-double-mastectomy_n_3271514.html?utm_hp_ref=celebrity" target="_blank">she had a double mastectomy</a> after discovering she carried a cancer gene on May 14.
Owl City's Adam Young took a snack break while helping launch the new OREO cookie "Wonderfilled" campaign in NYC on May 14.
Alyson Hannigan was spotted leaving the AOL office after visiting The Huffington Post in New York City on May 13.
Angie Everhart <a href="http://www.huffingtonpost.com/2013/05/13/angie-everhart-cancer-diagnosis_n_3267500.html" target="_blank">confirmed that she's been diagnosed</a> with thyroid cancer.
Selma Blair was seen enjoying her Mother's Day with her son, Arthur Bleick at the beach in Malibu, Calif., on May 12.
Jennifer Aniston and Justin Theroux took a stroll after shopping at Barney's and dining at Fred's Restraunt in New York City on May 12.
Sienna Miller attended the Arqiva British Academy Television Awards at the Royal Festival Hall on May 12 in London.
Reese Witherspoon flaunted her legs in short shorts while watching her son's football game in Brentwood, Calif., on May 11.
Selena Gomez was spotted spending some time at the pool in Miami, Fla., on May 11.
Halle Berry flaunted her baby bump at the 20th Annual EIF Revlon Run/Walk For Women held at the Los Angeles Memorial Coliseum in Los Angeles, Calif., on May 11.
Liv Tyler took a walk with a male friend around West Village in New York City on May 10.
Stephen Amell hosted the F*ck Cancer event on May 9 at Bootsy Bellows in Los Angeles, Calif.
Pregnant actress Jenna Dewan headed out of her home in London on May 9.
Kerry Washington stopped by "Extra" at The Grove in Los Angeles, Calif., on May 8.
Bradley Cooper went incognito as he headed to the set of "American Hustle" on May 8 in Boston.
Ryan Reynolds was spotted walking his dog Baxter while sporting the new Fitbit Flex Wireless Activity Wristband in Bedford, NY on May 7.
Olivia Wilde was spotted rocking Carrera shades at Carrera Ignition Night in New York City on May 7.
Jennifer Lopez and Casper Smart held hands while leaving their hotel in New York City on May 7. Check out J.Lo's tight leather pants!
Blake Lively rocked thigh-high boots and a little black dress for a photo shoot in New York CIty on May 7.
Jennifer Lawrence and Sarah Jessica Parker share a laugh while attending the "PUNK: Chaos To Couture" Costume Institute Gala at the MET Museum in New York City on May 6.
Beyonce looked amazing at the "PUNK: Chaos To Couture" Costume Institute Gala at the MET Museum in New York City on May 6.
Kristen Stewart wowed in a jumpsuit at the "PUNK: Chaos To Couture" Costume Institute Gala at the MET Museum in New York City on May 6.
Nina Dobrev dazzled at the "PUNK: Chaos To Couture" Costume Institute Gala at the MET Museum in New York City on May 6.
Gwen Stefani and Gavin Rossdale attended the "PUNK: Chaos To Couture" Costume Institute Gala at the MET Museum in New York City on May 6.
Jessica Biel flashed her bra while she was out with her dogs for a walk on May 6 in New York City.
Brooke Burke-Charvet and her son enjoyed Wendy`s new Frosty Waffle Cones in Los Angeles, Calif., on May 6.
Kim Kardashian and Kanye West held hands on May 5 before heading to dinner in New York City.
Joshua Jackson and Diane Kruger were seen walking together in SOHO in New York City on May 5.
Josh Hartnett was snapped catching a cab in New York City on May 5.
The crowd watched as Paris Hilton and her boyfriend River Viiperi shared a sweet kiss at the Pool After Dark at Harrah's Resort in Atlantic City on May 4.
Orlando Bloom had his hands full during an afternoon outing in Beverly Hills, Calif., with 2-year-old son Flynn on My 4.
Keith Urban carried 2-year-old daughter Faith while 4½-year-old Sunday Rose stuck close to mom Nicole Kidman as the family ventured out in Hollywood on May 4.
LeAnn Rimes sported short shorts as she shopped in Los Angeles, Calif., on May 3.