Recent Grammy winner John Mayer's birthday gift to girlfriend Jennifer Aniston for her 40th birthday on February 11 is a new song. The news was confirmed by the winner of "Australian Idol" season one, Guy Sebastian, via a twitter post.

"Had to stop recording cause Mayer wanted to borrow his band back to record a song for Jennifer in the studio... All the girls go...awwwwww," so Guy wrote, without revealing any further details.

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.

Jessica Biel threw her boyfriend Justin Timberlake a surprise birthday party Sunday. Justin - who turned 28 on Saturday - was stunned when he arrived at Los Angeles' Hollywood Roosevelt Hotel's lavish penthouse suite to find his friends and family waiting to celebrate his special day.

Jessica, 26, had planned a Super Bowl-themed bash for the "SexyBack" singer and the penthouse had several large flat-screen TVs so guests could watch the famous American football match.

Jennifer Aniston is planning a star-studded 40th birthday party. The former "Friends" actress, who reaches the landmark age on February 11, wants to celebrate early with a lavish bash at her new Beverly Hills home on February 7.

The guest list will include Jennifer's boyfriend John Mayer, her close pal Courteney Cox and her husband David Arquette and singer Sheryl Crow.

Beyonce Knowles reportedly refused to walk to her car in the cold after rehearsing for U.S. President Barack Obama's pre-inauguration concert.

The "If I Were A Boy" singer was furious when she was told she would have to make her own way to her car four blocks away as the surrounding streets had been shut amid heightened security before the event.