I ordered the long sleeve, midriff rashguard (black, blue, and pink) for my daughter. She just turned 11. She is 5'0" and 89 lbs, and a competitive gymnast. The size 14 is very loose in the arms (she's fairly muscular though) but the top generally stays down when she does raise her arms. The bottoms fit nicely. She likes the suit and would recommend it to anyone who is active and doesn't want to wear a traditional two piece. It seems to be decent quality, she swims daily and uses the diving board and we haven't had any wardrobe malfunctions lol!For reference, my daughter is 41 lbs and 3'7" (43 inches). Slim build.Such a strange fitting. I bought a size 5 for my 4 year old because that's her normal size. The bottoms fit well, but the top was too short, sitting somewhere between her belly button and the bottoms. It was also a bit tight. I then bought a size 6. The bottoms were baggy and the top wasn't as tight, but still too short. Returned and bought a suit from a different retailer.My daughter just turned 12 and we typically have to order her slim clothing. She is average-slightly above average height and usually around the 20th percentile in weight. The Under Armour youth medium shirts are too short for her but fit her frame everywhere else and the youth large loose fitting shirts typically swallow her. After reading reviews, we decided to order up a size and purchased the 14. We were sent a size 12 by accident and the shirt was way too short and very form fitting. Our replacement came and the bottoms and top fit really well as long as she doesn’t raise her arms above her head. Her belly is exposed when she does this, but it wasn’t a deal breaker for us since it covers her when her arms are down. The purpose of the rashguard to us to protect as much skin as possible, so I do wish the top was longer.Definitely order a size up.Great suit for a 10 year old!I did order up, this was just in case my daughter grows. She loves how soft and smooth the material feels. It washed well, no pilling or shrinkage. The picture looks exactly like the set we received.I bought the teal bathing suit in a 2t for my daughter and it was way too small. I went to reorder another in 3t but they were out of stock so I bought the popsicle suit and the bottoms are a little too big and top a little too small - we will manage. However both were good quality and cute bathing suits.My daughter loves the color and look of this suit. We usually have no issues with the Under Amour brand but this suit seems to run small. We had to return the first one for a larger size. The second suit came two days before our vacation and was just thrown into the suitcase. Unfortunately after one wear, 1/4 of the bottom hem on the rashguard started to dethread. Being that we were on vacation returning the suit was not an option so I had to hand stitch it myself. Now my daughter doesn't want to wear the suit anymore, waste of $40Muy buena calidad, pedi una talla mas y le quedo perfecto. ella es talla 12 en mexico y este traje lo pedi talla 14