Swift went to Ross and her husband Jimmy Lovine's Malibu home over the weekend to celebrate her 38th birthday.

"Paltrow was dancing with Swift and hanging out with her a lot. They seemed like good friends. Swift was in an amazing mood and very social," usmagazine.com quoted a source as saying.

Another source claimed that the "Bad blood" hitmaker was "busting moves" with singer Mary J Blige.

"Mary ruled the dance floor. She was dancing up a storm with everyone all night. (Taylor was) also busting moves with Mary on the dance floor for a while," the source said.