Bonnie McKee & JC Chasez: Matthew Morrison's Halloween Party!

Bonnie McKee puckers up as Madonna while having a blast at Matthew Morrison‘s annual Halloween party on Saturday night (October 26) at Warwick in Hollywood.

The 29-year-old singer was joined at the party by JC Chasez, Emmanuelle Chriqui, Adrian Bellani, JustJared.com‘s Jared Eng, and 50 Shades of Grey producer Dana Brunetti.

PHOTOS: Check out the latest pics of Bonnie McKee

A few days earlier, Bonnie hit the stage for a very special performance at the 2013 Just Jared Halloween Party held at Beacher’s Madhouse at the Hollywood Roosevelt Hotel in Hollywood.