My daughter is on the small side, and this suit seems almost too small even on her.  I'd probably buy a size large.  It's otherwise a fine suit.

cute on my toddler whos in swim lessons .Does the job

well built suit, but runs v small!

I ordered a size 6 for my 3yo, who wears clothes ranging from size 5 to size 6.  The suit was small....big enough to get on, but it is hurting her shoulders.  I like the suit, though.  It has nice elasticity, and the material isn't too thin.  I just wish I'd ordered up more than I did.

My daughter loved this. It was a tad smaller than I expected, but fit very nicely.

I love the colors and the material, size 6x feels perfect to my child that generally wears a 3t -4t.