Ashton Kutcher has officially welcomed a new member into his family after his sister Tausha eloped in Louisiana last week (ends18Apr14).

The Two and a Half Men star and his new fiancee Mila Kunis, who is reportedly pregnant with the couple's first child, were among the few witnesses at the intimate ceremony, which took place at the Woodridge Bed and Breakfast near the city of Slidell on 16 April (14).

Photos of Tausha and her groom Kenny Kordisch have been published on, and the venue owner, Debbie Fotsch, admits she was pleasantly surprised to find Kutcher and Kunis on her doorstep when they turned up for the low-key ceremony.

Fotsch, whose husband Tim presided over the nuptials, says, "Opening up the door to Ashton and Mila was overwhelming and a surprise. They were extremely nice. They were everyday people and made us feel very comfortable."

The surprise wedding took place days after reports surfaced suggesting Tausha and Kordisch are due to become parents in October (14) - around the same time Kunis is allegedly due to give birth.

The Kutcher clan is also set for another addition - Ashton's twin brother, Michael, is also set to become a dad in December (14), according to In Touch magazine.