Kristin Cavallari had her bachelorette party at The London in West Hollywood over the weekend. Credit: Courtesy of Kristin Cavallari

Pretty pretty princess! Kristin Cavallari wore a sparkly tiara and wide sash for her bridal shower at The London in West Hollywood over the weekend, looking as radiant as ever in the run-up to her summer wedding to fiance Jay Cutler.

The former Laguna Beach reality star, 26, shared a snapshot of herself surrounded by friends on her Instagram account on Tuesday, June 4. Cavallari wore a simple peach-and-green dress that accentuated her tiny waist, her blonde hair worn down in waves.

Earlier in the weekend, Cavallari showed off her impressive post-baby bikini body poolside in L.A., posing for photos in a tiny black-and-white strapless bikini top and matching bottoms.

The young mom -- she and Cutler, 29, are parents to adorable tot Camden, 9 months -- has been working hard to get her body into fighting shape in time for the wedding, with major support from her husband-to-be.

"I'm lucky to have Jay, who would rather have a couple pounds on me," she told Disfunkshion magazine earlier this year. "He tells me when I'm too skinny. That helps."

Becoming a mom has helped her to realign her priorities as well, she told Us Weekly in February.

"I've always been a really healthy eater," she told Us. "I think when I got pregnant I took it up another notch, just because I was so aware of what I was putting in my body. I've just maintained that since I've had Cam. And honestly, I rarely drink alcohol, which helps too. It's just empty calories."