Ok, 'cause I was thinking of having a masquerade ball thrown in there... you know how Narcissa can be. I figured 5th year would work well 'cause that's when the stuff w/ Voldemort hasn't started and things are still pretty chill in life.
Honestly, I don't think a size ten is, either. I'm a size ten as well. I have been hearing it all my life, though, that I am fat [because my siblings were all thin].
Honestly, it's just something I put in the story and I never meant for it to be offensive.