What to wear.. party

Sa

My partners coworker is hosting a party for their work Fantasy Football League tomorrow night and I have no clue what to wear.. I’m always in yoga pants and tank tops bc I workout and am always on the go, no make up, and I’m always natural with my curly/wavy hair.. I want to look nice but not too over the top.

A couple of the females there are ones who clearly like him and flirt with him/don’t give a fuck that he has me so I want to look good.. like back off already bitch he wants me.. lol I feel ridiculous even typing that but it is what it is..

T shirts for easy pumping access

I’ve lost 19 lbs since having my son and now that I’m trying to tone up I’m in a awkward squishy mom belly/ big butt phase 🤦🏻‍♀️ HELP!