Los Angeles, February 15 – Obviously delighted about her engagement, Christina Aguilera kept showing us her ring at the Roberto Cavalli boutique opening on Rodeo Drive on Tuesday. And she happily obliged when we asked her to pose with her fiancé, Jordon Bratman, grabbing him by the wrist to bring him over. Aguilera’s publicist, however, was less delighted with this idea, and inserted herself between the couple, preventing any photos of the twosome. However, we did get a closeup of her engagement ring, the first. Nicole Richie’s fiancé wasn’t with her at the party, but she too was happy to show off her ring.

But the evening wasn’t just about the exploits of the newly betrothed. Like he did back in December at the Metropolitan Museum, red carpet designer to the stars Roberto Cavalli brought out a Hollywood A-list to welcome his new Beverly Hills digs. Mischa Barton arrived late, and was greeted at the door with a kiss from her guy Brandon Davis, whose mother, Nancy, hosted the private party. Mary J. Blige’s top matched the animal print of the backdrop. Salma Hayek and others who fill out his gowns nicely greeted Cavalli like an old friend.

The new store is conveniently located directly across the street from jeweler Harry Winston, making this part of North Rodeo a one-stop shopping destination for Oscar gear.