Zac Efron: Short Shorts for Halloween!

Zac Efron shows off his legs in a pair of short shorts for Miley Cyrus‘ Halloween party on Saturday (October 29) in Los Angeles.

The 24-year-old actor dressed up as a Reno 911 cop for the picture with sisters Aly and AJ Michalka, who tweeted the pic along with the caption, “Love our friends xo.”

PHOTOS: Check out the latest pics of Zac Efron

AJ dressed as the Queen of Hearts and Aly kept it vintage as a cigarette girl (FAKE cigs only!)

Also pictured inside: the sisters with Miley Cyrus, who showed off some nifty face paint.