Solange Knowles isn’t a fan of Katy Perry!

The R&B singer blasted Perry on Twitter after she caught her son sneaking to watch Katy’s music video “California Gurls”. Peep what the much more outspoken Knowles sister said by clicking below:

“Seriously, I [d]on’t like the fact dat Julez thinks he gotta sneak [and] watched ‘California Gurls’ on [You]Tube. Katy Perry is polluting the chirrens. It is like kiddie porn tho. All them damn colors, candy and sh– … and then Daisy Dukes, breast[s] shooting cream,” Knowles tweeted.

Solange also went in on Perry about the Sesame Street incident and called it a personal problem.

“And then Elmo and tits! ‘Dat sound like a personal problem.”

It sounds like there is a bit of tension going on…