Katy Perry took the red carpet by storm for the premiere of Jeremy Scott: The People's Designer in LA on Tuesday night. The singer arrived in a low-cut black halter dress and oozed Old Hollywood glamour while posing for photos; she also linked up with Jeremy - who wore a complementary look - for a few snaps before they were ho**red with a Handprint Ceremony at TCL Chinese Theater. Katy showed lots of cleavage while signing her name and sticking her hands in the cement, then struck a ****** of Silly poses for the cameras. Katy has a prominent role in the Jeremy Scott documentary, which follows the 40-year-old Moschi** designer's career. The pop star has been his muse for years, and in addition to wearing his creations on the red carpet and during her epic Super Bowl performance, Katy has also walked in his runway shows and served as his date to the Met Gala in May.