Gaining

When you start to be able to pinch the flesh on your fingers between your thumb and forefinger.

You'll notice your cheeks getting fuller before you develope a double chin

Other than that not much I can think of...OH and when you can get your forefinger into your belly-button beyond the first joint!

The signs of getting fat for me is when my face began to fill out and getting a double-chin. When my belly started getting rounder and bigger where now I could hold my belly with both hands. The clothes began to get tighter and then you move up to another size.