Oh boy! After L.A. clothing store MSTKN promoted their grand opening with an appearance and performance from Chris Brown, the “Autumn Leaves” singer slammed them. With flyers in hand, fans lined up around the block to see the artist do his thing. Chris however, is claiming that it’s all b.s.! He tweeted, “TeamBreezy: the store on melrose MSTKN has false advertised me coming to their store. I don’t f**k with them and their clothes are horrible.” MSTKN claps back. Check it out down bottom.