Britney Spears and Jason Trawick jetted to Las Vegas on Friday to celebrate their engagement, as well as Jason's 40th birthday.
The couple checked in at Planet Hollywood, where the "I Wanna Go" singer soon emerged from her suite for a congratulatory welcome on the hotel's mezzanine wearing a short, nude Herve Leger dress, with her soon-to-be husband by her side.
via ca.omg.yahoo.com
