It was a warm and balmy night at the Sunset Tower Hotel in Los Angeles, where Hollywood’s hottest starlets flocked to Lia Sophia’s preview party for the Lanaya II Collection. The designers of the celeb-coveted costume jewelry line, Elena Kiam and Dani Stahl, showed off the uber-glam collection to their gorgeous guests, which included The Hills alums Lo Bosworth and Stephanie Pratt, The Twilight Saga: Eclipse starlet Christian Serrratos and even Charlie Sheen’s ex Brooke Mueller!  RadarOnline.com scored an exclusive invite to the swanky event, which was truly sizzling in summer style.

PHOTOS: Stephanie Pratt, Lo Bosworth, Christian Serratos, Samaire Armstrong, Brooke Mueller, Golden Brooks, Ashley Scott, Stacy Keibler, Erin Lucas, Elizabeth Rohm, Charlotte Ross, Taryn Manning And Maria Menounos At The Lia Sophia Lanaya II Collection Launch

Though they may not be costars anymore, as The Hills celebrated the end of an era this week, but it appears that Stephanie and Lo still consult each other before they hit the carpet.  Both gorgeous gals were dressed to yacht, in naval inspired duds that were oh-so-summery. Dancing with the Stars hottie Stacy Keibler showed off her model figure in a one-shouldered alice + olivia white mini, which she paired with nude peep-toes, sharing her excitement about a scheduled appearance at the Comic-Con convention next weekend.

Star Splurge: Lia Sophia Cobble Stone Cuffs

Brooke Mueller looked far from stressed, making a short appearance dressed in black and white winter-worthy wear.  Perhaps Charlie’s ex should add a stylist to the payroll?

What fashionista jetted in from The City, channeling the Material Girl in cone-like fashion? Check out the gallery to find out.