Rihanna has been spotted making a midnight visit to Ashton Kutcher's house.

The "You Da One" singer visited the Two and a Half Men star at around 12am on Wednesday, and didn't leave until four hours later.

Rihanna, 24, arrived with her entourage at the five-bedroom Los Angeles property in a black 4x4 vehicle. The purpose of her visit is not known, but Ashton, 34, is said to be moving out of the rented property soon, as it has reportedly been sold to "Boyfriend" singer Justin Bieber for $10 million.

Ashton moved into the $50,000-a-month house a few months ago and reportedly fell in love with the house because it was an ideal "bachelor pad." The eight bathroom property comes complete with a floating dining room, infinity swimming pool, hot tub, private screening room and an open sky terrace.

"Ashton loved this property. It has bachelor pad written all over it. This neighborhood is stunning. It's a trophy house with a view of all of Los Angeles. It's totally the type of place a hot, single Hollywood guy would want," a source said at the time.