Before surgery. (Michael N. Todaro/WireImage)With her dad on June 4. (Twitter)Lauren Manzo's struggle to lose weight has been a major plot point this season of "The Real Housewives of New Jersey." Fans watched her try to diet and exercise — after her mother Caroline, who has struggled with her own weight, described her as "eight pounds of sausage in a five-pound bag" — but with little results, the 24-year-old opted to go under the knife. Manzo recently admitted that in September, she had lap band surgery, which has taken her weight from 185 pounds down to 155. "Something wasn't right with me," she tells Us Weekly as for why she decided to take such a drastic route. "I was depressed."

Rebecca on the cover of the July/August issue of Health magazine.Since giving birth to twin daughters Dolly and Charlie three and a half years ago, actress Rebecca Romijn's life has changed quite a bit (as can happen when you go from no kids to two at the same time).

A few things she realized she had to give up early on: much of her oenophile ways … and any ideas of late-night partying. "I've had to cut down on wine drinking, big time. I'd fall asleep for an hour, and then be wide awake!" she confesses in the July/August issue of Health magazine. "Every once in a while, I'd toy with the idea of, 'I can be a cool mom — a party girl at night and a mom in the morning.' But I'd regret it every time. Because those girls wake up at 6 a.m. no matter what time you come home!"

Fergie and her abs. (Russell James/SELF)There's no denying Black Eyed Peas singer Fergie (born Stacy Ferguson) has one of the best bodies in pop music — but even she has her insecurities. "I've learned to be more accepting of myself," she reveals in the July issue of Self magazine. "I'm 37, not 18, and I've got the lines to prove it." Fortunately, Fergie's got the body of an 18-year-old, but admits she has to work out a lot in order to keep her body toned and trim. "I want to be able to run around without worrying about sucking in my stomach!"

Matt Jones/RedbookKelly Clarkson may be an award-winning singer, not to mention "American Idol" winner, but her struggles with weight have been in the spotlight about as much as her music over the years. And frankly (despite the fact she's recently shed some pounds and debuted a newly fit figure) she's sick of talking about it.

Maria Menounos says she gained six pounds on Dancing With the Stars. (David Livingston/Getty Images)If you know anything about "Dancing With the Stars," you know that every season there's at least one contestant who ends her stint on the dance competition show significantly slimmer and then goes on to tout the weight-loss benefits of the daily rehearsals (often described as "grueling") and the encouragement of her professional dance partner (often described as "amazing" ). Kelly Osbourne, Kirstie Alley, and Kendra Wilkinson have all gotten a bonus burst of fame for revealing their dance-induced slimdowns in the media.

This time around, in the show's low-rated Season 14, former sitcom star Jaleel White has said that he dropped 13 pounds thanks to all that boogying, while former "Little House on the Prairie" star Melissa Gilbert insists that she started the show as a size 6, and was down to a size 2 by the time she was eliminated earlier this month. (Cue the yawns.) But one celebrity participant — entertainment reporter Maria Menounos, who got the boot the week after Gilbert — admits she had very different experience: She actually gained weight thanks to the dance floor.

Kenneth Willardt/SELFMiranda Lambert may be just as focused on a successful singing career as the next country crooner, but there's one thing she's less concerned about than many of her showbiz counterparts. "I don't care about being stick-thin. I don't want stuff to jiggle. Really skinny actresses make me hungry — I see them and think, Honey, you need to eat! I'm lucky I don't have to live like that," she tells Self magazine. "I feel my best when I'm a toned, not flabby, size 8. Women come up to me and say, 'You're beautiful and confident, and that makes me feel I can be, too.'"

Richard Simmons doing what he does best. Stephen Shugerman/Getty ImagesRichard Simmons is synonymous with a lot of things — eccentricity, Sweatin' to the Oldies, short shorts, and being the butt of a lot of jokes.

As for that last one, it sometimes seems as if the fitness guru enjoys the humiliation, returning again and again to talk shows like "The Howard Stern Show" and "Late Show With David Letterman," knowing full well both the King of All Media and his late-night counterpart aren't going to be all that nice to him, for the sake of laughs.

Daytime talk show host Ellen DeGeneres is known for many things — her groundbreaking former sitcom "Ellen," in which her character came out as a lesbian, the fact that she dances in the opening of every episode of her show, and her veganism, which means she doesn't eat any animal products. The 54-year-old recently opened up to the Associated Press about becoming a vegan, and admitted that it was far from easy. DeGeneres, a native of New Orleans, a city that takes pride in its extravagant food, said she tried a vegan diet for the first time in 1997, but that the change only lasted six months. "I've always called myself an animal lover. And yet I ate them," DeGeneres said. "Until four years ago I would be driving past these cows on pastures, and think 'What a lovely life that is,' and I'd go and order a steak." It wasn't until 2008 that she gave up eating meat and dairy products for good. "Someone mentioned, 'If you knew what chicken looked like or you knew how chicken was made, you'd never eat it again,'" she explained. "Something snapped."

Ellen DeGeneres (Jason Merritt/Getty Images)Ellen and Portia de Rossi (Fern/Splash News)