Need to buy an outfit for graduation in a few weeks. I normally wear the same outfit every year…

Need to buy an outfit for graduation in a few weeks. I normally wear the same outfit every year because you can’t see it under the gown, but I’m struggling this year with getting a maternity one.

It’s absolutely boiling wearing the gown, even when it’s freezing outside so I need something really cool and it has to have a button by my neck to attach the sash thing to. 🤷🏻‍♀️🤷🏻‍♀️

Any advice on where to buy smart maternity wear that doesn’t cost a fortune.x