Yes, she's doing it again. Not once, or twice, but she's engaged for the third time around. After dating for more than a year, the star's former agent, Jason Trawick proposed to Britney Spears during his birthday dinner last Thursday. And now, they're taking the celebration to the next level, in Las Vegas. 　　Britney took it to the Internet to show her joy, Tweeting, "OMG, last night Jason surprised me with the one gift I've been waiting for. Can't wait to show you! SO SO SO excited!!!! Xxo" 　　The 30-year-old singer, who gave her beau a motorcycle on his 40th birthday, was returned with a surprise, a 3-carat Neil Lane ring, designed by Jason himself. The tiara-motif sparkler has 90 small diamonds surrounding the eternal band. 　　The jewelry designer revealed that when asked Jason about what the ring would represent, Jason kept his answer simple and romantic, which was "she is his princess!" 　　Jason represented Britney in 2006 when the she was still married to Kevin Federline, with whom she shares two sons. Britney also briefly tied the knot with childhood friend Jason Alexander in 2004. (Courtesy: RCA Records)