You can see it in the first photo someone takes at dinner. She is not wedged at the end of the booth with one arm folded across her stomach. She is not doing that half-turn, half-hide pose women learn by accident after years of seeing bad pictures of themselves.
Her shoulders are back. Her chin is level. When the phone comes up, she does not scramble into the safe smile or bend one knee like she is trying to disappear politely. She lets the picture take all of her in.
Same dress, same face, same hair maybe. Still, the shot feels different because she has stopped arranging herself like she is asking not to be noticed.