Is Rihanna getting late night booty calls from Ashton Kutcher?

Last night, the Barbados singer was spotted at the “Two and a Half Men” star’s Los Angeles mansion in the wee hours of the morning.

According to sources, RiRi pulled up at Ashton’s home in a black SUV around midnight, and didn’t leave until 4 a.m. (Ooooweeeee! Wonder what they were doing that late at night?)

Earlier that night,  Rihanna was spotted having dinner at Giorgio Baldi Restaurant in Malibu.

Wearing a pair of short shorts, polka dot heels, and a matching scarf, the pop diva looked stunning as usual.

If RiRi and Ashton did hook-up, it wouldn’t be a big surprise. They’re both single and ready to mingle!

Check out more photos of Rihanna out in California last night below:

[Pics: CG]