I browsed through the reviews to decide what size jacket to get, then I found a reviewer with the same height and similar weight like me posted a photo of themselves in a medium. So I got myself a medium in black.

I'm 5'2", 102lbs, and 34B. I bought a medium to go along with the pair of Colombia's Storm Surge rain pants (x-small) for when the rain comes in Southern California. I enjoy how roomy and light it is, and I can wear several layers underneath when the weather demands it. When it rains, the water rolls straight off of it and keeps me dry.

The sleeves have adjustable Velcro cuffs, and it goes pass just the tip of my fingers. The mesh-lined jacket itself almost covers my entire butt, but my rain pants can take care of the rest. The storm hood and waist can be easily adjusted with the elastic cords found there. I often wear a cap whenever I go out, and the hood covers it except for the very edge of the bill/visor, so I often find it damp/wet, but not a big deal. The main front zipper has a flap that can be secured with Velcro to keep the water out. The two pockets has flaps and zippers as well, and the insides are mesh-lined and are big enough to fit an entire 16.9 fl oz water bottle, or my iPhone 6 Plus with its Otter Box Defender case on with some room to spare.

I highly recommend it for any kind of rain except for really heavy rain like a monsoon.

Pics included, and sorry for the blurred out face and bathroom...