Summer Engagement Party & the obvious need for another bag

I think most women can relate - you have that moment standing in front of your closet saying "I have nothing to wear" except your closet is overflowing. I had that moment a few weeks ago when I was getting ready to go to my friend's engagement party. Except it was with purses/bags and not clothes this time. I could NOT find an appropriate bag to wear with this dress! I'm now on the search for a brown/tan/gold smaller bag. I'm thinking the Rebecca Minkoff Mini MAC because it can be used as a clutch as well as crossbody and shoulder bag. 

P.S., hopefully this colorful dress is somewhat of a seasonal improvement over my obvious cop-out in the last "summer" wedding post with a black dress!

P.P.S - the last time I wore this dress was for my law school graduation 2 years ago! Where NO pictures were taken of it!

Dress: T Tahari (old) (different pattern, love this one, and this one)

Rings: David Yurman & Michael Kors (really similar)

Bracelets: Nordstrom Rack (similar, similar) & Ann Taylor (similar)

Watch: Michael Kors

Shoes: Zara (similar but $$$)

Bag: Longchamp