is this dress formal?

Myriam • Pregnant with #2!!! 🤰🏻 👧🏼👶🏼10/28/19

I am going to a military ball this weekend and I'm not sure if I should buy this dress. I don't want to look out of place. I don't really want to go for a long dress since I'm short. what do yall think? is this dress formal enough?