Donald Trump Jr. is also scheduled to attend the event on February 1, the day before Super Bowl LIV in Miami.
“Roseanne is a really loyal Trump supporter,” Trumpettes founder Toni Holt Kramer told the publication.
“If there was ever anybody who really put their mouth on the line and said how much she loves the president, she is one of them. You can’t get a hotter name in town,” Kramer added.
Barr’s self-titled ABC sitcom was canceled in May 2018, after the comedian posted a series of racially charged tweets.
In one tweet, she compared former Obama adviser Valerie Jarrett to a cross between the Muslim Brotherhood and the movie Planet of the Apes.