Winter Wedding Guest Outfit

Hi! I’m attending my first ever winter wedding in January and I’m not sure what to wear or even where to look!
Any recommendations on where I can find decent dresses/jumpsuits for under 300?

we recently ran this on SheerLuxe which might help:

Renting might be a good option if you want to wear something really mega like The Vampire’s Wife, Taller Marmo, 16Arlington for a lower price - try HURR, Rotaro, ByRotation… in fact HURR currently has a rental pop up within MATCHESFASHION on Carlos place at the moment, so you can try stuff on IRL before renting.