Credit: laurenconrad/Instagram

Gettin' wild in the wild wild west with LC! Lauren Conrad turned 27 on Friday (Feb. 1), and made like a sexy cowgirl for the special occasion with a Western-themed birthday celebration with pals that night. Documenting the free-spirited evening out via Instagram and Twitter, the former Hills star turned designer and author wore tiny Daisy Duke shorts and a plaid, Western-style shirt tied above her navel to reveal her trim abs.

"Headed to our b-day hoedown!" Conrad wrote beneath one detailed snapshot of a "Country Western" belt buckle. As the night unfolded, Conrad shared more pics with family members and pals in similar cowboy (and cowgirl) dress, and posted a full-body shot as she looked for a ride home. ("Just hailing a cab with my stick pony . . . ")

Conrad  added some Caribbean flavor to the festivities as well -- apparently downing some rum during the evening. "Cheers to my Birthday! Can't wait for what @Malibu_Rum and I have in store for you all this year," she captioned another pic, in which she holds up a bottle of Malibu Rum.

PHOTOS: Her best hairstyles ever

Before heading out for the raucous night, the California girl went for a hike, and also Instagrammed some of her birthday spoils: Pale roses, French macarons, and birthday cards. No word yet what birthday goodies Conrad received from boyfriend William Tell, whom she began dating on Valentine's Day 2012.

While Conrad and the USC law student are serious, don't expect her to have babies just yet. "I want kids, but not in the immediate future," she told Lucky magazine.