Beyonce Knowles is ''a slob''.

While the 'Halo' hitmaker is often praised for her personal style, her close friend and Destiny's Child bandmate Kelly Rowland says Beyonce is too busy to keep her living space tidy.

Speaking on 'Watch What Happens Live with Andy Cohen', she said: ''She would tell you this. She's a slob.

''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.''

While Kelly's latest solo single 'Dirty Laundry' deals with her feelings of insecurity when compared to Beyonce, she insists she is not jealous of her success.

She said: ''The song is really about me and she is one of the dynamics of course in my life. At that time I was searching for exactly what I wanted and I couldn't find it at that time for a second.

''[Beyonce] was just so embracing, so supportive and I love her for that. I played it for [fellow Destiny's Child singer] Michelle [Williams] 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.''