After returning from a girls getaway with Katy Perry in Barbados, Rihanna was spotted hitting the town with Jay-Z Thursday night.

The two dined with five other guests at Katsuya Hollywood, and were talking about their new music, says a source, adding that it wasn't all business. "They had a really good time."

The casually-dressed group dined on yellowtail with jalapeño, miso cod, and baked crab hand roll, complemented by Houereki sake.

Meanwhile, across the restaurant both Jessica Simpson and Leighton Meester dined separately.