Kelly Rowland didn't hold back during an appearance on Thursday's "Watch What Happens Live" when host Andy Cohen brought up former Destiny's Child bandmate Beyonce.

When asked about Beyonce's most annoying habit, Rowland replied, "She would tell you this. She's a slob."

Rowland went on to explain, "If you walk in -- maybe she's gotten better since becoming a mother -- but she's got a lot on her brain. You can tell she's got a lot going on."

As for Beyonce's response, she and fellow ex-Destiny's Child member Michelle Williams cheered Rowland's honesty. "[Beyonce] was just so embracing, so supportive and I love her for that," said Rowland. "I played it for Michelle and she was like, 'Girl! This is great!' so I had just such great support from them and that's what means the most to me."