Not feeling the "Glow"

Everyone always talks about and sees a "Glow" on pregnant women. Well let me tell you, I am not feeling it. Not one bit. I feel like a fat cow due to the back fat I see me gaining. This is by far my heaviest I have ever been. I am 24w4d with twin girls. I just feel so uncomfortable about my appearance. It has me so up in the air about what to wear for my baby shower next month, and if I even want to do maternity pictures.

Do any of you ladies have some advice for me or words of wisdom??

Below is a picture of myself and some dress I found, but am unsure about due to my body changing.