Following their shows at the Staples Center in LA, Muse celebrated at Harry Morton’s Pink Taco Sunset Strip on Saturday night. Newly single Steven Tyler arrived with a mysterious brunette bombshell, while “Breaking Bad” star Aaron Paul, along with Katy Perry (sans John Mayer), partied with the band — including frontman Matt Bellamy. All eyes were on Bellamy’s fiancée, Kate Hudson, in a tight red tank top and “dancing all over” her rock-star man “like a scene out of ‘Almost Famous,’ ” a source said.