When Levi Johnston and Bristol Palin tie the knot, there may be one notable absence: the mother of the bride.


Sarah Palin is refusing to attend the planned celebration, according to Popeater.


“Everyone would kill to get an invite even if it means having to buy them an expensive gift. It’s just too bad that her mother has refused to attend. Although I can’t say I blame her after everything that boy has put her through,” a source says.


“Bristol is very upset about her mother’s decision.”