Yesterday i was looking for a seamstress in the West zone to fix those nasty jean lengths, stumbled upon this.

New Definitions
Seamstress: \seem'-stres
Describes 250 pounds in a size six

There's hope for us size 6 to be 0. Models to be size triple zeros. Out with slimming centres, the new fad are seamstress! Interest-free and 30-days money back guarantee. You don't have to undergo terrible electrowaves in your tummy and the torture of growling sensations in your stomach. Eat and still fit in!

Thats it! I've found the slogan. Muahaha