Let's be real: Half the fun of going on vacation is planning all of your outfits beforehand. When I build my vacation packing list , a great dress (or several) always makes the cut. When I'm living my carefree life on a getaway, summery dresses make for low-effort, high-reward outfits . That's why I'm refreshing my collection before my summer travel plans are fully underway. When it comes to shopping for vacation outfits , Revolve and Shopbop are always the first places I look. Between the two retailers, I know I can find a line-up of It-girl-approved dresses worthy of my Instagram grid. That certainly was the case when I recently perused the retailers' vast selection of vacation-ready pieces. From classic white dresses to frocks in spring's hottest colors , I stumbled upon plenty of dresses that have me looking up flights to the south of France . Ahead, I'm sharing the Revolve and Shopbop dresses that belong in your carry-on for your next trip.…