The phrase "summer soiree" refers to a fancy party or gathering that takes place during summer. It usually involves people dressing up, good food, and socializing in a beautiful outdoor setting. Full definition
The bright, colorful dresses from this resortwear mainstay are made for summer soirees. (redbookmag.com)
I'm always on board for a boat ride and it would be the perfect choice for any birthday, anniversary, or engagement party, OR even just a fun summer soiree with friends! (goldcoastgirlblog.com)
Jaime King must like lacy things because she hit the 10th Annual InStyle Summer Soiree in West Hollywood clad in a Jason Wu Fall 2011 ivory dress with lace overlay. (thefashionspot.com.au)