Mila Kunis is raising eyebrows and sparking speculation that she and her That ‘70s Show co-star and boyfriend Ashton Kutcher are engaged.

The Black Swan actress was seen out buying flowers in Studio City, Calif. this week, sporting a ring on her engagement ring finger. It was just a simple gold band, but the fact that it was placed on that finger has the media talking.

Perez Hilton notes that the gold band can’t mean that she and Kutcher are already married, considering he’s still legally married to ex-wife Demi Moore.

Kutcher has joined Kunis in the UK recently as she filmed Jupiter Ascending with new father Channing Tatum. They were seen visiting the Great Wall of China last week.

Yahoo reports Kunis will soon go on a promo tour for her film Third Person, which will also premiere at the Toronto Film Festival later this month. Kutcher will soon return to the set of his sitcom Two and a Half Men.

Kunis and Kutcher started dating in 2011, after Kutcher's split with his wife of six years.

image: Wikimedia Commons