Twin mommies, HELP!!!!

Destiny • 22 years old and pregnant with fraternal twins! Due late April! So excited! My first child/children!
So I do not know when to do maternity pictures! I am 23 weeks and feel like it's not a big enough bump but I don't want to be the size of a 🐳🐳🐳 when I take the pictures. When is the best time to take them?