How do I react to my girlfriend's insecurity about her weight?

Recently my girlfriend has been telling me she's frustrated because she doesn't fit into some of her clothes, or that they're tighter than before. She has said she thinks she has "ugly" body. I don't at all. She's fucking gorgeous to me.

I know this a pretty lose-lose situation, and tbh I don't know how to get around it.

Any advice?

How do I react to my girlfriend's insecurity about her weight?
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