Oprah Winfrey had gone solo on the cover of O Magazine for nine years before sharing the spot for the first time with First Lady Michelle Obama. Now, she's chosen a second person who's going to share the cover with her: Ellen DeGeneres.

DeGeneres has been campaigning for the spot on her own television show, including imposing herself on past O Magazine covers and selling autographed copies of O magazine where Ellen signed the name Oprah in her gift shop. Winfrey surprised her with a live via satellite video appearance on Friday's episode of Ellen's show.

Rihanna's mentor has begged people to stop discussing the singer's private life. Producer Evan Rogers, who discovered the Barbados-born beauty, insists Rihanna - whose boyfriend Chris Brown has been charged with felony assault and making criminal threats after allegedly assaulting her - is confused by the conflicting advice she has been given.

He said: "I think that everyone has good intentions and means well, but it turns up the heat in terms of it seeming like the whole world is telling her what to do.

Penelope Cruz is sleeping with her Oscar award. The Spanish star picked up the Best Supporting Actress prize for her role in "Vicky Christina Barcelona" on Sunday and was so thrilled she took the famous golden statue to bed.

She told U.S. TV talk show host Oprah Winfrey: "When they gave it to me I could not stop crying for 20 minutes. I could not look at it - is it for real, or one of those things my friends gave me or something?"

Tom Cruise was "weird" and "awkward" when he bumped into his ex-girlfriend Penelope Cruz.

The "Valkyrie" star was "visibly flustered" when Penelope - who he dated for three years before they split in 2004 - approached him at a pre-Oscars party in Beverly Hills on Friday night.

Julia Roberts wants to invite resident Barack Obama to dinner. The "Pretty Woman" star says the Obama family top the invite list to her dream dinner party - which also includes Diane Sawyer, Mike Nichols, Oprah Winfrey, Stedman Graham and Tina Fey.

Julia, 41, said: "For sure, we're going to start with the Obamas. The girls can play with my kids."

Jennifer Aniston celebrated her 40th birthday with a lavish party on Saturday night. The former "Friends" star - who turns the landmark age on February 11 - celebrated four days early with a star-studded bash at her Beverly Hills mansion.

Jennifer invited close friends including Courteney Cox and husband David Arquette, Oprah Winfrey, Sheryl Crow, Tobey Maguire and wife Jennifer Meyer, Tom Hanks and Rita Wilson to join her and boyfriend John Mayer at the party.