Beyonce, Fergie, Gwen in Singapore

Singer Beyonce, center, performs at the F1 Rocks concert on Saturday Sept. 26, 2009, in Singapore. (AP Photo/Joan Leong)

Singer Beyonce performs at the F1 Rocks concert on Saturday Sept. 26, 2009, in Singapore. (AP Photo/Joan Leong)

DJ Havana Brown poses at the F1 Rocks concert on Saturday Sept. 26, 2009 in Singapore. (AP Photo/Joan Leong)

Actress Lindsay Lohan is seen at the F1 Rocks concert Saturday Sept. 26, 2009 in Singapore. Lohan is in Singapore to record the F1 Rocks TV program. (AP Photo/Joan Leong)

Hip hop music group The Black Eyed Peas members, will.i.am, from left, Taboo, Fergie and apl.de.ap, pose for photos at the F1 Rocks concert on Saturday Sept. 26, 2009 in Singapore. (AP Photo/Joan Leong)

Gwen Stefani singer of US band No Doubt performs at the F1 Rocks concert on Friday Sept. 25, 2009 in Singapore. (AP Photo/Joan Leong)

Gwen Stefani, singer from US rock band No Doubt performs at the F1 Rocks concert on Friday Sept. 25, 2009 in Singapore. (AP Photo/Joan Leong)

Gwen Stefani, right, lead singer of American rock band, No Doubt, films a clip for the F1 Rocks TV program with Force India F1 driver Adrian Sutil of Germany, on Thursday, Sept. 24, 2009 in Singapore. The band is in the city-state to perform at F1 Rocks, a three-day concert running from Thursday to Saturday, Sept. 26. (AP Photo/Joan Leong)

Hip hop music group The Black Eyed Peas members, Fergie, from left, will.i.am and apl.de.ap, perform at the F1 Rocks concert on Saturday, Sept. 26, 2009, in Singapore. (AP Photo/Joan Leong)

DJ Havana Brown performs at the F1 Rocks concert on Saturday Sept. 26, 2009 in Singapore. (AP Photo/Joan Leong)

Aisa, vocalist of Taiwanese rock band Da Mouth, performs at F1 Rocks concert, on Thursday, Sept. 24, 2009 in Singapore. The three-day concert runs from Thursday to Saturday. (AP Photo/Joan Leong)

American music star Beyonce is escorted from the McLaren Formula One team garage after the third practice session on the Marina Bay City Circuit in Singapore, Saturday, Sept 26, 2009. Singapore will host the season's 14th Formula One Grand Prix on Sunday Sept. 27. (AP Photo/Dita Alangkara)

McLaren Formula One driver Lewis Hamilton right, talks with American music star Beyonce left, in his team garage after the third practice session on the Marina Bay City Circuit in Singapore, Saturday, Sept 26, 2009. Singapore will host the season's 14th Formula One Grand Prix on Sunday Sept. 27. (AP Photo/Dita Alangkara)

Beyonce, Fergie, Gwen in Singapore

Hollywood stars perform at F1 Rocks concert on Saturday Sept. 26, 2009, in Singapore.