Question!

Beyonce and The "House Of Dereon" and Dereon, did a photoshoot in Bermuda! During the video, she shows a few dresses and talks about how she loves the new line. I have one question: If her mother's line is so great, why is it that when Beyonce is on the red carpet, she is wearing other designers? Hell, if you don't want to wear it, why should we? I guess that's two questions! My Bad!