I've got a flat bum too even though I've got fairly biggish hips and thighs!!!.....my bum just looks rubbish, no junk in my trunk!!
I've tried the pants that lift your bum and they were pretty good, but quite high waisted so you've got to be careful what you wear them with. Haven;t tries the full bum ones though - if you give them a try let us know how it goes.
The so called Magic pants that just lift give an appearance of a mono-bum, no cleavage ,if you get my drift. (UU )Stay as nature intended, bet you are young and in a few years will be wanting to turn the clock back to now.
hi fruitsalad, if you buy today's Daily Mail, there is an article on page 21 about the new padded pants. Ann Summers will start selling them this month for �20. Bargain. I am lacking in that department so will be ordering myself some. ;-D