Petite Fashion Advice

I found this video on Petite Fashionista's site. I thought it gave good advice (FINALLY, they are actually saying that it's okay for a petite woman to go floor length. I've always known it to be true - I went floor length for my prom - but so many fashion experts tell shorter women that it's knee length only! My question to these experts is "so do you SERIOUSLY expect these women to go for a knee length BRIDAL GOWN? So THANK YOU for saying that it's perfectly okay for shorter women to wear long lengths!), but why did (almost) all of the models have to be 5'4"? Do you think they should have used shorter women too?