what to wear to my baby shower?

Danielle • Married my best friend on 4/11/2015. I have a son—rainbow baby born 2016, and trying to grow our little family💗💗💗
I need something verrrrrry affordable as I'm on disability right now so that means basically no money.  Any suggestions? I've been drawn to maxi dresses with empire waist but I'm soooo short (4'11) I'd end up spending more to alter to dress. HELP! Pretty please💗