Christina Aguilera's Pregnancy Has Been Announced... by Paris Hilton

Christina Aguilera may not be talking about her pregnancy... Paris Hilton is doing it for her.

Hilton and Aguilera were both at the packed Las Vegas nightclub, Luxor, last night when Hilton took over the microphone and announced Aguilera's pregnancy to the crowd. (Aguilera has not yet announced the news to the world.)

"Congratulations to the most beautiful pregnant woman in the world. You're gorgeous," Hilton announced at about 2 A.M. this morning.

Aguilera looked temporarily shocked at the announcement despite wearing a pink mini-dress with an obvious baby bump. The singer was sitting in an elevated VIP booth with her husband Jordan Bratman whose shoulder she buried her head into following the surprise announcement.

The crowd responded with applause to the news.