I went out with a Girl who’s friend said she was size 12, my mom told me that is Normal.
I went out thinking that and got Married.
She tells me now, she was actually size 14 at the time.
After having a baby she worked out and lost tons of weight though and now she is considered Slim.
So if you like the Girl or Boy, ignore their girth and Daven (+Pay for their Gym Subscription) that they should lose weight after the Chasuna.