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Ashton Kutcher Accompanies Mila Kunis to Her Brother's Wedding 

Noel Vasquez/Getty Images(NEW YORK) -- Mila Kunis took a walk down the aisle this past Saturday, but it wasn't with her boyfriend, Ashton Kutcher. The Ted star served as a bridesmaid for her brother Michael Kunis' wedding in St. Petersburg, Fla., with the Two and a Half Men star on hand to witness it, according to E! Online.

Michael, 36, tied the knot with ballet dancer Alexandra Blacker, 29, who trained Mila to play a ballerina in 2010’s Black Swan, People magazine reports.

A source tells People magazine Mila and Ashton's present to the newlyweds was a 10-day honeymoon in Australia.

Now that the 35-year-old Ashton's divorce from Demi Moore has been finalized, he reportedly hopes to tie the knot with Mila, 30.

A source tells E! Online, "Mila wore a gold band on her engagement ring finger but it didn't have a diamond, just a simple gold band similar to a wedding band," adding, "Mila was very happy for her brother and his wife. During the ceremony, she stood at the altar and seemed very focused on the vows."

The E! source went on to say, "Every once in a while, [Mila] would look out to Ashton and make eye contact with him." The source adds, "Ashton was very supportive of Mila and happy for the family. He was joking around with Mila's brother and they invited him to come and pose for family pictures with the bride and groom after the wedding."

"They rarely left each other's sides and were always holding hands and whispering to one another," the source went on. "Ashton let Mila do her thing but always was right there at her side. If she was busy, he knew lots of people to talk to and was having a great time with her parents and friends."

A business source close to Kutcher tells People, "Ashton and Mila have talked about getting married for quite a while."

The former That ‘70s Show co-stars have been dating since spring 2012.

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