4babiesMe, I would say absolutely not. Get the right jeans, the right fit and style them right.
I usually wear a size 10 (sometimes 12) bottom and I am far from a petite waif. I recently bought my first pair of BF jeans at age 51. I went two sizes up to a 14 so they would look very, intentionally baggy/slouchy after trying on both sizes 12 and 14. In fact, without a belt I can easily slip them down right off my hips.
I though they looked good in the mirror but wasn't sure if I was kidding myself. Last week I had my conservative and quick-to-critique-me 78 year old mother over for dinner. Much to my surprise she actually commented on how much she liked them and told me they made me "look thin." She was very sincere and really meant it, I know because I pressed her on it. Believe me when I say she would have told me if she thought otherwise!
So go ahead and just try them on. They are so comfortable after wearing the form fitting jean styles for so long!
ETA: these are the BFs I bought after seeing them on forum member Sveta: http://www.amazon.com/KUT-Klot.....38;sr=1-12