Do the Pussycat Dolls have their claws out? That was the buzz after just one bandmate showed up for Melody Thornton‘s birthday bash in Los Angeles. The group, which recently decided to take a break, denied there’s any tension. But only Ashley Roberts turned up for the recent party at Empire Hollywood. A source said, “Although there was chatter about the lack of attendance by the group, Melody had a good time and sang the Pussycat Dolls hit ‘Buttons’ with Ashley.”