I have been invited to a party at a fancy club this weekend, and I am very excited about it! It's my husband's friend's pre-engagement party

I want to be well dressed but not over-the-top. While looking through my closet, i realised I don't have anything club-worthy. Fancy parties such as these are very rare in my life (once or twice a year at the most).

Any advice on what to wear will be appreciated! I don't mind buying new stuff but I need my clothes/accessories to be versatile. There will be dancing, and I want my outfit to be comfy enough to shake a leg