Giddy up cowgirl!

Adrianne Curry showed off her skills on the mechanical bull at Saddle Ranch in Hollywood on Thursday night.

The former America’s Next Top Model was getting raunchy at her pal Sarah Carroll’s bachelorette party in celebration of Sarah's wedding to co-star Spencer Falls on Sparah.com.

Before Saddle Ranch, the group hit up Hustler  — where divorcée Adrianne (who split from The Brady Bunch’s Christopher Knight after five years of marriage in May) stocked up on sexy lingerie and other sex supplies.

What happens when two, smoking hot blondes wear the exact same sexy Risto mini dress?  A Who Wore It Best style showdown, and only the fiercest fashionista can score the top honors!

PHOTOS: Paris Hilton Vs. Sarah Carroll In Risto

Paris Hilton rocked the Risto smock dress first, hitting the red carpet of the Nylon Young Hollywood Party pairing the sexy number with nude Christian Louboutin heels and a matching clutch.

Backstreet Boy A. J. McLean has taken a bite out of Lindsay Lohan - by splashing out thousands of dollars on one of her sexy vampire images taken by celebrity photographer Tyler Shields.

PHOTOS: Lindsay Lohan Poses As Vampire In Photo Shoot

The pop star paid big bucks for the blood soaked image of Lindsay sitting on top of Vampire Diaries star Michael Trevino with a wooden stake in her hand.

McLean fell in love with the image after it was shown at Shields art exhibition in Los Angeles at the weekend which Lohan also attended.

Click on the link to see Lohan’s sexy vampire.

PHOTOS: Lindsay Lohan Leaves Gjelina Restaurant

Shields told RadarOnline.com: “A. J. paid between $30,000 and $40,000 for the large print of Lindsay with Michael Trevino. I was really thrilled with how the exhibition went and we sold a lot of my images on the night including one of Diana Agron from Glee, Emma Roberts and actors Spencer Falls and Sarah Carroll.

“This is what I do for a living and my subjects do not get a cut of any sales generated just a lot of exposure by being photographed by me. Hopefully, I will work with Lindsay again and she was thrilled with the results of our latest collaboration.”

PHOTOS: Lindsay Lohan’s Mug Shot Evolution