"J.R Rotem produced a couple of my songs and it's very exciting," Hayden told Star that evening, at the Smashbox Cosmetics Holiday 2006/Brent Bolthouse Birthday Party at L.A.'s nightclub, at which she arrived with J.R. "I would say it's rock but it's really a mixture of everything."

Last week, Britney Spears sparked Jonathan "J.R." Rotem romance rumors. ]

The singer, 25, who split from husband Kevin Federline last month, was spotted in a heated make-out session with music producer Jonathan "J.R." Rotem in Hollywood.
The couple went out for dinner. Then Britney, wearing a tiny mini-dress, stripped out of her jumper and climbed on to his lap outside a bar as she puffed on a cigarette reports Sun UK.

The pair, then left hand-in-hand to get into a limo. An onlooker said: “They looked like a couple in love. She sat on his lap and he stroked her back very tenderly.�?