What should my hubby wear to match my dress..preggo announcement!

Nicki • #1🍼 due 12-5-18

Takin pictures next week for my announcement (announcing on Father’s Day) I got this dress in a medium and large going to see what fits best by next week I’m 14 weeks now and so excited..I have no idea what my man should wear to match..please HELPPP!!!! Thanks ladies