We hear Mathew Knowles is “aggressively shopping” an unscripted series built around youngest Knowles daughter Solange-and the E! Network is reportedly interested. But don’t expect any cameo appearances from Beyonce, celebrity insiders say Solange is “done taking a back seat to her big sis and is not going to stand for it any longer.”

“There is a lot of tension between the two sisters right now and their relationship is suffering,” a source said in this week’s edition of the National Enquirer.