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From their charity efforts to their political activism to their inner strength, these four ladies know how to lead by example. Who’s most inspiring?
Sandra Bullock
Throughout her public split with Jesse James, Sandra Bullock handled the scandal with class and refused to badmouth her cheating ex. Now she and son Louis have moved on as one happy little family!
See photos of Sandra Bullock
Angelina Jolie
Do-gooder Angelina Jolie has donated her time and money to people in need around the world – all while making movies, looking fabulous and raising six children!
See photos of Angelina Jolie
Lady Gaga
Gay rights activist Lady Gaga fights for equality. Her rally against "don't ask, don't tell" helped raise awareness and the law was ultimately repealed. And Gaga's devotion to her fans is endearing.
See Lady Gaga's crazy outfits
Oprah Winfrey
Oprah's business savvy is as admirable as her generosity. She took her media domination to the next level by launching her OWN network. Plus, she was named 2010's most charitable celebrity!
See Oprah's best moments
If loving these pop-culture phenomena is wrong, we don't want to be right! Which one couldn’t you resist?
'Jersey Shore' Slang
We admit it: "GTL," "gorilla juicehead," and "grenade" have somehow made their way into our conversations. Just try not to let them slip out in business meetings.
See more juicy quotes from the cast of 'Jersey Shore'
Lady Gaga's No-Pants Looks
Getting fully dressed before leaving the house? Not mandatory! Though pulling off the Gaga look ourselves is questionable, think how much easier it would be! Apparently it works for baseball games, too!
See more photos of Lady Gaga
'Real Housewives' Songs
'Real Housewives of Atlanta' star Kim Zolciak's "Tardy for the Party" got it started. From LuAnn de Lessep's "Money Can't Buy You Class" to Danielle Staub's "Real Close," the Bravo stars rocked it on the mic.
How to live like a 'Housewife'
Justin Bieber's Hair
Not since "The Rachel" has one hairstyle been so influential. With one shake of his beautiful bangs, the 16-year-old teen king can incite an epidemic of Bieber Fever!
See more photos of Justin Bieber
Whether you prefer werewolves or vampires, the latest 'Twilight' flick provided plenty of otherworldly man candy. Which mythical guy most caught your eye?
Robert Pattinson
Lovesick vampire Edward Cullen is known for his sexy, brooding stare – and we're happy to stare right back!
See photos of Robert Pattinson in 'Twilight'
Kellan Lutz
Playing Edward's buff older brother Emmett, the hard-bodied actor shows off muscles, as well as his playful side.
See more photos from 'Twilight: Eclipse'
Xavier Samuel
With his blonde hair and baby face, this 'Twilight' newcomer (who plays newborn vampire Riley) is irresistibly cute – even when he's being bad.
See more photos from 'Twilight: Eclipse'
Taylor Lautner
As werewolf Jacob, he competes with Edward for Bella's affections -- and we can see why she has a tough time deciding!
See photos of Taylor Lautner in 'Twilight'
The never-ending drama on Bravo's 'Housewives' keeps us entertained all year long -- thankfully! Which show makes you want to become a Housewife?
'Real Housewives of Atlanta'
Kim Zolciak started the singing Housewife trend, putting the Hotlanta cast on the map. Now, we're never tardy for the party when these Georgia peaches are on!
'Real Housewives of Beverly Hills'
We started watching for Paris Hilton's aunts, Kim and Kyle Richards, but Camille Grammer's relationship drama, Taylor Armstrong's lips and Lisa Vanderpump's tiny dog Giggy kept us hooked.
See more photos of the 'Real Housewives of Beverly Hills'
'Real Housewives of New Jersey'
Though Teresa Giudice yelling "prostitution whore" while flipping a table was hard to top, the second season battle against Danielle Staub -- complete with hair-pulling -- was just as juicy!
See more photos of 'The Real Housewives of NJ'
'Real Housewives of New York City'
While Bethenny Frankel and Jill Zarin's friendship crumbled, Kelly Bensimon was busy making "lemons into lemonade" on Scary Island. No wonder Ramona Singer gets "crazy eyes"!
Sometimes celebs just don't know when to keep things to themselves. Whose TMI moments were the most entertaining?
Khloe & Kourtney Kardashian
Kourtney and Khloe are no-holds-barred on Twitter. They even jokingly advised their followers to put mayonnaise on their vaginas to make them "shine like the top of the Chrysler Building."
Take our celebrity twitpic quiz
Lindsay Lohan
Her recent stints in jail and rehab have put a damper on LiLo's tweeting. But before her summer lock-up, if you wanted to know anything about the actress at any moment, you just had to turn to Twitter.
Take our celebrity twitpic quiz
Courtney Love
From her ill-advised and incoherent messages to daughter Frances Bean to the nearly nude photos of herself, this troubled rocker's Twitter page is like a car crash. We just can't look away.
Take our celebrity twitpic quiz
John Mayer
It was clear that Mayer had no censor after his interviews with 'Rolling Stone' and 'Playboy'. From his masturbation addiction to his sexual obsession with Jessica Simpson, no topic was off limits!
Take our celebrity twitpic quiz