Katy Perry: Capital FM Jingle Bell Ball 2013!

Katy Perry rocks leopard print while arriving at the Capital FM Jingle Bell Ball 2013 held at the O2 Arena on Saturday (December 7) in London, England.

“@SaraBareilles congrats lady! Who woulda thought hotel cafe would produce 2 little Grammy nomers. 🙌 #albumoftheyear,” the 29-year-old singer tweeted about her gal pal Sara Bareilles, who earned nominations for her album The Blessed Unrest and hit song “Brave.”

PHOTOS: Check out the latest pics of Katy Perry

Earlier in the week, Katy was all bundled up while landing at the airport in Milan, Italy.

FYI: Katy is wearing Versace.

10+ pictures inside of Katy Perry arriving at Capital FM Jingle Bell Ball 2013…