Lady Gaga Previews 'Sex Dreams' Before Tomorrow's iTunes Show!

Lady Gaga steps out of her hotel rocking a pair of mouse ears on Saturday (August 31) in London, England.

The 27-year-old entertainer signed autographs for her fans as she headed out – one fan even had her sign a box of Cheerios cereal!

That same afternoon, Gaga treated her fans to another rehearsal video for tomorrow’s iTunes Festival, where she is set to preview many new songs from her album ARTPOP.

Today, Gaga shared a rehearsal vid for “Sex Dreams”.

“#WHENILAYINBEDITOUCHMYSELFANDTHINKAYOU” Gaga tweeted. “LAST NIGHT DAMN, YOU WERE IN MY #SEXDREAMS DOING REALLY NASTY THINGS”

Check out the video below…

10+ pictures inside of Lady Gaga leaving her hotel in mouse ears…