LATEST: Ashton Kutcher's twin brother MICHAEL stayed away from the star's wedding to Demi Moore, because he couldn't trust his estranged wife not to leak details to the press.

According to the pair's mother DIANE, Michael - who is currently divorcing wife MELISSA - was invited to the September (05) event but decided not to attend as a "favour" to his sibling.

Diane describes Michael's actions to US magazine Star as "a favour to Ashton from a loving brother".

She adds, "We were determined to keep the wedding a secret and we thought the best way to do that was keep Melissa out of the loop. Michael was invited."

Last month (SEP05), Melissa blamed Charlie's Angels: FULL THROTTLE star Demi for Michael's absence.

She said, "I've always felt that Demi thinks Ashton's family is working class and uneducated and not sophisticated enough to be around."