She really shouldn't have had much trouble making that impression; there's plenty of mass over her hands.
Anyway, one time while I was a teenager I got lost on the bus coming home from Santa Monica Beach, and found myself in front of Grauman's. I didn't stop to look for hand prints.
Wombat-socho has the big "Rule 5 Sunday: Roll Tide!" post up at the The Other McCain.
More Katy Perry bending forward below: