I always recommend Rent the Runway to people who have black tie/formal events to attend because the prices are amazing and the quality of the dress you’ll be able to get will be much better than if you tried to find something for a similar price in a department store or boutique.
Here are a few I found that might work for you:
HALSTON HERITAGE For Evergreen Pleat Gown, $135 (retails for $495)
BADGLEY MISCHKA Flora Chiffon Gown, $135 (retails for $595)
HALSTON HERITAGE Envious Emerald Eve Gown, $100 (retails for $745)
And here’s a few others I found that you may like:
BADGLEY MISCHKA Rosalind Peplum Gown, $135 (retails for $695)
ISSA Spice Twist Gown, $135 (retails for $763) (Does this dress look familiar?)
I hope this gives you some good ideas! Have fun!