Pop sensation Miley Cyrus's surprise guest performer for her upcoming 'MTV Unplugged' special will reportedly be singer Madonna.

According to sources, the two were on a Hollywood soundstage Monday rehearsing the collaboration, reports eonline.com.

It will be recorded Tuesday afternoon and will air on MTV channel Wednesday night at 9 p.m.

Madonna most recently teamed up with Macklemore and Ryan Lewis at the recent Grammy awards for the hip-hop duo's performance of 'Same love'.