32inch waist,good or bad?

I'm 17 years old, 5'ft ,130lbs. and I wear size 7 jeans.My friend took my measurements yesterday and they were 38-32-34.I'm not sure if those are normal or "average" measurements but compared to Jayne Mansfield and Bettie Page,my idols, I seem a lot bigger. What can I do to lose some inches off my waist? Are my measurements good? I'm trying to become a pinup model so thanks for any tips or comments.