There was dancing at Britney Spears’s 20th birthday party Sunday night — private dancing. By a male stripper, reports the “New York Post,” which says the performance took place at Solaia, an Italian restaurant in Englewood, N.J., after the pop star’s concert at Continental Airlines Arena. Also in attendance as stripper Steven Peters did his bumps and grinds: Britney’s parents and 10-year-old sister Jamie Lynn. Peters told the “Post” Spears giggled and blushed her way through his routine, while her mother, Jamie, enjoyed it so much that she reached out and touched the beefcake’s biceps and buttocks. “Britney was blushing and had a big smile on her face the whole time,” Peters told the newspaper. “She told me, ‘This is the best birthday present I’ve ever gotten!'” Spears reportedly spent most of her party unwrapping gifts, 11 of which came from boyfriend Justin Timberlake, who was unable to attend because his group, ‘N Sync, was rehearsing in Las Vegas for the Billboard Music Awards. “She talked to Justin on the phone while she was unwrapping his presents,” said Solaia owner Michel Bittan. “He gave her some beautiful Baccarat crystal glasses, a baby-blue teddy bear and some silver candelabras.” No word on who gave the pop princess the stripper.