Lauren Conrad perfects “Missoni Bikini” Butt & Ass in Cabo San Lucas

They've been quietly dating since February, but it looks like Lauren Conrad's new romance with William Tell is heating up.
Former The Hills star Lauren, 26, soaked up the sun in a Missoni bikini as she relaxed on sun loungers next to her law student boyfriend, 32.

Looking good: Despite Lauren's insecurities, the star is looking trim in her two-piece (Read more and See more Pictures)