Sexy songstress Katy Perry walks the ‘blue’ carpet with her British beau Russell Brand at the 2010 EMI Grammy after-party at the W Hollywood Hotel and Residences Sunday night in Hollywood.

PHOTOS: Celebs Attend EMI Grammy After-Party

While the I Kissed A Girl singer was classically chic at the Grammys, wearing a nude Spring 2010 Zac Posen backless floorlength which featured metal floral embellishment, she sexed it up for the after-party, changing into a silver sequenced plunging dress.

• TAGS

• EMI Grammy After Party
• fashion
• Katy Perry
• Russell Brand
• W Hollywood Hotel
• Zac Posen