Yes, embrace a healthy lifestyle but also embrace your curves!
There is a survey and article from the Daily Mail in London that says a woman's happiest size to be is UK16 which is a US12.
Seems that US sizes 10-14 have the most positive frame of mind in reference to their appearance and are generally more confident in the way they wear their cloths and how they feel out of their clothes.
Marilyn Monroe was 12/14. Enough said.
Read it for yourself here and remember that the UK sizes are 4 digits off of USA sizes.