My gf has gained weight. So has my love for her.

My(25M) gf(24F) is the kindest, prettiest, most wonderful person I've ever met. We were both in the military, so it was hard to gain weight when you had to work out a lot. We both got out, went to school, got good jobs, and I thought she would still look the way she did. Well, it's not like she had a choice in that. The stress of the military, the stress of life, all kinds of stuff. What was once a size 4 is now a size 12. She's had 3 kids as well. She now has a double chin, her once reasonably sized breasts are now twice their size. She's a little self concious about her new self, so I want to show her how much I love her. I don't want to make her think otherwise. She's still my everything.