Performer Diana Ross watches as President Barack Obama speaks during the 'Christmas in Washington' concert, attended by President Barack Obama, at the National Building Museum on December 9, 2012 in Washington, D.C. The concert benefits the National Childrens Medical Center and is hosted by comedian Conan O'Brien. (Molly Riley-Pool/Getty Images)

Diana Ross, the legendary Supremes frontwoman, allegedly made a scene last Thursday at a Beverly Hills restaurant after refusing to wait to be seated.

According to the New York Post, upon arriving at Italian restaurant La Scala for lunch, Ross was told she would have to wait to be seated until her daughter arrived.

Ross reportedly refused, and walked to a booth and sat down.  Management informed the diva of their seating policy: Incomplete parties will not be seated unless a reservation has been made.  She was also told that if “she cut the line and sat before her daughter arrived, she would not be served.”

When Ross’ daughter arrived, sources say, the pair created a scene in the restaurant, and then stormed out.

Gigi Leon, owner of La Scala told the Post: “I’m sorry that Miss Ross had a problem with that and she feels that the rules didn’t apply to her. Our policy is that we don’t sit incomplete parties. If people jump the line, our policy is we don’t serve them, and she was told that. We treat everyone the same whether you’re famous or not. We love having her as a customer. We’d be happy to have her back.”

A rep for Ross did not comment.