Separation is normal for any vinaigrette or dressing made with mostly oil and vinegar, and especially in a dressing like this one that doesn't have emulsifiers like mustard or egg
The length allows it to be dressed up, like for a beach wedding
$129.00 $129.00 Unit price per Coral Dusty Rose Dusk Wisteria Tahiti Babaroni Michaelia Halter Maxi Dress with Ivory Lace Bodice-Dusk Michaelia features a fun and floor length design with an illusion halter neckline and elegant back keyhole detailing

I had discovered Pinterest about six months before we started planning our wedding and already had a few sneaky inspiration boards hidden away, I knew I wanted a rustic country theme with lots or herbs, moss and gypsophila, but didnt decide on a colour theme until I found my bridesmaid dresses. Photography Copyright (c) 2014, Georgina Harrison Photography Later I added gold painted pumpkins into the decor but must admit that at one point two days before the wedding, as I was standing in my parents garage at midnight covered in gold spray paint I did start to wonder if I had gone a little mad! Flics adult bridesmaids dazzled in dresses by Jenny Yoo from BHLDN in plum, with gold shoes from Kurt Geiger, her younger bridesmaid wore a pretty pale pink dress from Dessy, and her little flower girl looked as cute as a button in the Baby Odette dress in dusky pinkfrom Monsoon
You likely have at least most of them them on-hand