On Jan. 3, the singer was taken to L.A.'s Cedars-Sinai Medical Center and held for psychiatric evaluation. Soon after, she lost visitation rights with her sons and was put under the watchful eye of her father, Jamie, who became her conservator.
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Mary-Kate Linked to Ledger's Death
When a masseuse discovered Heath Ledger's body on Jan. 22, she spent 10 minutes making phone calls to Mary-Kate Olsen before dialing 911. Olsen refused to speak about her involvement. Federal prosecutors decided not to issue a subpoena for her to testify.
Photo by Florian Seefried/WireImage.com; Lorenzo Santini/WireImage.com
Eliot Spitzer, the New York governor known for cleaning up corruption on Wall Street, resigned after it was discovered he patronized prostitution service Emperors Club, spending up to $4,000 a visit by Ashley Alexandra Dupre, 23.
Photo by Mario Tama/Getty Images; ABC/HEIDI GUTMAN
Anne Hathaway's Bad Boyfriend
Anne Hathaway's beau, Raffaello Follieri, was taken into police custody in April after allegedly bouncing a $215,000 check. The star split with the Italian real estate developer hours before his arrest on charges of wire fraud and money laundering.
Photo by Larry Busacca/WireImage.com
The Miley Cyrus Shoot
The Disney star caused a media frenzy when she appeared semi-topless in the June 2008 issue of Vanity Fair. She told Us that she was "so embarrassed" by Annie Leibovitz's photos.
Hogan Doesn't Know Best
Shortly after Linda Bollea, 49, filed for divorce from her husband, Hulk Hogan, she began dating her daughter's 19-year-old former classmate, Charlie Hill. "I'm totally freaked out," Brooke said. "I personally don't like it at all, or condone."
Photo by Splash News
Jamie Lynn Spears Gives Birth
The teenage sister of Britney gave birth on June 19 to daughter Maddie. Jamie Lynn announced she was expecting a baby when she was only 16 years old. She and her boyfriend, Casey Aldridge, got engaged a few months later.
Photo by INFphoto.com
Madonna Becomes a Yankees Fan
In July, Madonna hosted late-night visits from Yankee player Alex Rodriguez at her NYC apartment -- shortly before announcing her split from Guy Ritchie. A-Rod attended the singer's concert, and Madge dressed her son Rocco in the team's shirt.
Photo by Kevin Mazur/WireImage.com
The Divorce Heard Round the World
On the first day of Christie Brinkley and Peter Cook's bitter public trial, Cook and his former assistant, Diana Bianchi, detailed their affair. He recalled how he frequently had sex with Bianchi, then 18, and spent $3,000 monthly on web porn.
Photo by Dimitrios Kambouris/WireImage.com; Splash News; Djamilla Rosa Cochran/WireImage.com
A Topless Tryst
Sienna Miller and the still-married Balthazar Getty got cozy on a boat in Positano, Italy, on July 12. When the photos leaked of a topless Miller kissing Getty, he announced he and his wife -- with whom he has four children -- had separated.
Photo by Splash News
Every Parent's Nightmare
OMFG! In July, Gossip Girl turned negative criticism into publicity. Four new ads promoted the second season, and one quoted the Parents Television Council slamming the show as "Mind-Blowingly Inappropriate."
The Blonsky-Bianca Brawl
The Hairspray star and her father were arrested in July after getting into a fight with the family of America's Next Top Model contestant Bianca Golden over saved seats in the departure lounge at an airport in Turks and Caicos.
Photo by Jemal Countess/WireImage.com; Charles Eshelman/FilmMagic
To Drink or to Drive
Before the Transformers star was arrested for suspicion of DUI after a car crash on July 27, LaBeouf spoke out against drunk driving. "I don't know how to have one drink," he told Details. LaBeouf was never charged.
Photo by JFXONLINE.COM
John Edwards Comes Clean
The Democratic presidential candidate admitted in August to an affair with filmmaker Rielle Hunter. Edwards said the affair began in 2006 when wife Elizabeth's incurable cancer was in remission. He denied that he's the father of Hunter's baby girl.
Photo by Kevin Mazur/WireImage.com; SIPA Press
A Palin Pregnancy
Days after John McCain made Sarah Palin his running mate for the presidential campaign, the Republican VP candidate announced her 17-year-old daughter, Bristol, was five months pregnant.
Photo by PAUL J. RICHARDS/AFP/Getty Images
Lauren Conrad Deals with Another Rumor
Lauren Conrad denied she had an affair with Justin Bobby -- the ex of pal Audrina Patridge. "I'm being accused of being a bad friend, a slut and a liar all at once," she told Us.
Photo by Polk Imaging/FilmMagic; Todd Williamson/WireImage.com; Jean Baptiste La Croix/WireImage.com
The Spencer-Heidi Nuptials
Heidi Montag's mom, Darlene Egelhoff, said she was "devastated" that her daughter eloped to Mexico with Spencer Pratt on Nov. 20. "It's the biggest mistake Heidi's ever made," she told Us.
Photo by Mango; Tom Stillo
The Truth about Brangelina
In a December issue of Us Weekly, sources revealed how Angelina Jolie flirted with Brad Pitt -- then married to Jennifer Aniston -- by getting naked on set. The two actresses spoke out in interviews, and Aniston told Vogue she was bothered that Jolie felt the need to recount a detailed timeline of how she fell in love with Brad.
Photo by Chris Polk/FilmMagic; Lester Cohen/WireImage.com; George Pimentel/WireImage.com