I think you should go for the Georgette if those are your only two options. The ruffle dress puts too much emphasis on the waist line because that is the only undecorated portion of the dress, since you are feeling a little pudgy it is not going to help matters. If possible leave room for other options possibly dark colors, vertical stripes or dresses with a particular distraction in a region you,re comfortable with eg. a broach if your boobs are your asset, a v-neck if you have smaller boobs etc. Good luck.
How much weight are we talking about. I prefer the georgette, it is a classic cut but the ruffle in black will do also. If you gained the weight on your hips, DO NOT do the ruffle in coral. Either one you choose sha, I know you will look stunning.