Jenny McCarthy and Donnie Wahlberg are tying the knot on Saturday, Aug. 30 and Donnie's brother, Mark Wahlberg, won't be in attendance.

Although Mark tweeted his congratulations to the couple on Saturday, TMZ reports that Mark is not attending his brother's wedding because he and Jenny do not get along.

"TMZ has learned he won't be there, and we're told it's because he and his wife aren't fans of the bride," a TMZ rep writes. "According to multiple Wahlberg sources, Mark is not as close with Donnie and Jenny as Jenny has made it seem. Or at least, not with Jenny. We're told Mark's wife Rhea did not like a recent interview Jenny gave with Howard Stern where she talked about her relationship with Mark."

During her interview with Howard Stern, Jenny referred to Donnie as the "the best Wahlberg," The New York Daily News.

Since the interview, Jenny, Mark and the rest of the Walhbergs have been on the outs.

Donnie's mother and his brother Bobby will also not appear at Jenny and Donnie's wedding.

Despite TMZ's reports, Mirror Online claims that Mark's hectic filming schedule is the reason behind his nonattendance at the wedding.

"A representative for Mark, 43, told Mirror Online the actor isn't able to attend the nuptials because he is throwing his 10-year-old daughter Ella a birthday party in Los Angeles today, as he will be busy filming in Boston when she turns 11 on Tuesday," Mirror Online's Rebecca Pocklington writes.

This isn't the first report of Jenny cause a rift in familial relationships.

Jenny was also accused of criticizing her cousin Melissa McCarthy's weight, causing a rift in their relationship.

"The cousins were close at one time, but they've grown distant over the past few years," said a National Enquirer source.

The source also accused Jenny of banning Melissa from her wedding.

What are your thoughts on Mark's no-show at his brother's wedding? Share your comments below.