Mila Kunis and Ashton Kutcher are reportedly engaged after having dated for two years.

The "Black Swan" actress Mila Kunis was spotted with a huge engagement ring during an outing with her mother on Feb. 27.

The actress debuted her ring just days after tweeting a photo of the pair with the caption, "I love you @kutcher78."

The actress was dressed casually, in black yoga pants and a white sweater, as she walked around with the huge sparkler on her ring finger. Her loose-flowing attire also had fans wondering if the actress is pregnant. See photos of Mila Kunis and her engagement ring here.

In pictures captured by photographers, the diamond looks to be fairly big and simple.

NYC Jeweler Shari Fabrikant told Hollywood Life: "If ring is F VS1 could run app $250,000 and up."

Kunis, 30, and Kutcher, 36, previously co-starred on the "That 70s Show" in 2000.

Kutcher's divorce from first wife Demi Moore was finalized in Nov. 2013 after they announced their split in 2011.

The newly engagement couple had kept their dating life private, but have been spotted numerous times getting cozy on dates.

A source reportedly confirmed to E! that the couple are indeed engaged and that they "have talked about getting married for quite a while."