Party Patrol: Lindsay, Lingerie and The Hills Girls

Lindsay Lohan, Lo Bosworth and more come out on a rainy L.A. night

Tonight is a total paparazzi dream: Two parties on Robertson Blvd., and one has Lindsay Lohan on the guest list.

The first stop for me and the girls from The Hills and The City is the Undrest lingerie store party, where Lo Bosworth said she came to pick up some sexy things for her boyfriend.

Don't know who he is? That's because he's not on the show.

"We've been dating six months and he has no interest in being on the show," she told me.

Whitney Port made a quick appearance, swooping in and out (with gift bag in hand) in under an hour. Superskinny Stephanie Pratt says she hasn't upped her gym routine, and I actually just saw her eat sushi and two bites of a Sprinkles cupcake before ditching the remainder of the treat. That's her secret! (Or maybe she owes her svelte figure to cutting out alcohol? She's due in court in the morning to be arraigned on a DUI charge.)

And where's Lohan? Follow me...

Down the street at Kitson Men, Lindsay just showed up, causing a photo frenzy at the Nu Pop Movement party. And it started raining—a total rarity in L.A.—so she even had an excuse not to do interviews! Inside, LiLo smoked and played with her BlackBerry before heading into the store to shop for free—and shop she did, scoring tons of swag.

As she checked out headbands, I could see she had a red mark on her right arm near her most recent tattoo. When Linds scored a free watch from the line, she joked about giving it to her estranged dad.

Don't get your hopes up, Michael.

Bridget Marquardt came in with boyfriend Nick Carpenter and made a beeline for the bar. My kinda gal! Come back tomorrow for video and more gossip from the starry scene.