Katy Perry’s Cowgirl-Themed Birthday Party: Yee Haw! (PHOTOS)

Erika Brooks Adickman | November 16, 2011 10:33 am

Last friday night, Katy Perry celebrated her 27th birthday with a Wild West-themed party that put any fiesta you’ve ever attended to shame. The “One That Got Away” singer was decked out in a cowgirl costume, complete with matching cowhide bra and pants, hot pink chaps and a vest with “B Day Girl” spelled out in faux bullet holes across her back. Adam Lambert and boyfriend Sauli Koskinen arrived dressed as (sexy) Indians, but the belle of the hoedown had to be Katy’s California Dreams tour partner Robyn, who dressed as the most fantastic cactus we’ve ever seen. Check out pics from what the California native called the “best. party. ever.”