Can someone please help me. I remember  watching a drama about a girl who is a aspiring fashion designer and her step mom claims the girls designs her own. The girl also has a friendship/ relationship with a popstar. I am pretty sure that it is a Korean drama but I am not certain. It must be a minimum of 10 yrs old.  

wasn't toGETher like this? although it's been a while since i've seen it but it's taiwanese and it's her sister not step-mom but i honestly can be wrong. I seem to rememeber her drawing pictures and the sister taking them. Jiro Wang plays a failed popstar living in their house.
It's looks like Fashion King, minus the part the girl having a friendship/relationship with a popstar. 
Thanks but it's definitely not Fashion king or toGETher... ???? 
I remember the popstar parents objected to him being a pop star also. 
It was either the step mum who owned the clothes store or maybe it was just a manager and the girl just worked there. 
You made me actually go down my drama list ^_^
It's Star in My Heart 1997
http://mydramalist.com/1932-star-in-my-heart
and watch it again here https://www.viki.com/tv/29462c-star-in-my-heart
@Reyna-Roma  thank you!!! thank you!!! that's the one!  I'm new to this so I hope you get this msg !!
You're welcome!
And Welcome to the MDL family as i like to call it