WireImage/Alexandra Wyman

Lauren Conrad Celebrated Her Birthday With A Mini-'Hills' Reunion

The MTV alum had a belated bash with Lo Bosworth!

Birthdays are the perfect occasion to catch up with longtime pals -- and if you're Lauren Conrad, that means spending some QT with a fabulous fellow MTV alum.

The "Hills" starlet, who turned 29 this past weekend, enjoyed a belated Big Apple dinner with Laguna Beach bestie Lo Bosworth, plus their girlfriends Jilly Hendrix and LC's wedding planner Cassandra Herschenfeld. Looking very "Sex and the City," ladies!

Jilly Hendrix's Instagram

"@lobosworth and I wishing our two least gangsta friends a happy bday," J -- who frequently accompanied her hometown crew to Les Deux and other Tinseltown hotspots -- captioned the grinning snapshot above. This intimate mini bash certainly trumps previous surprise parties in honor of LC -- like that evening Heidi Montag organized, which featured that awkward Spencer Pratt-led toast. Or that tearful embrace between the former Hillside Villas roomies on that boat...

For a bit of nostalgia, take a look back at Lauren, Lo and Jilly sitting poolside in Vegas dishing about a very popular man about town: Brody Jenner.