Dreading pictures

My son is getting married this weekend and I hate to say it but I am practically dreading the event because of my weight. I don’t feel good in my dress and I am embarrassed about what the pictures will look like. I feel so selfish making this about me at all (I have not told anyone any of these feelings). I have done this for other big events too and it’s so disheartening to actively dread important events because I’m fat.

C son’s wedding
T I don’t feel comfortable with how I look
F shame
A dread wedding day, focus on my negative feelings
R not enjoy a very special day?

C sons wedding
T I am so happy for this wonderful couple
F love
A pay attention, focus on others
R Enjoy special day