Since my daughter LOVES fish, I knew she'd love a fish birthday party. It took me awhile to decide what she should wear for her party. I wanted it to be something she could wear beyond that day, so I knew I didn't want to put her age on the shirt or anything saying birthday on it. I also didn't necessarily want to do something with a fish on it.
Then I had an epiphany-- monogram a fishing shirt! You see them all over Pinterest, but it's usually for teenage girls on adult sized shirts. Low and behold, Columbia sells their famous shirt in a kids size! The smallest they had when I ordered it was a 2T, which was exactly what I needed. And it was on sale! Go to Columbia to check it out. I ordered it through ebates and got 5% cash back (woohoo!).
The fabric used for the appliqué was a Hancock Fabrics exclusive, so sadly it's not available anymore.
The appliqué font is from Boutique Fonts.
The shirt runs big enough that I think she'll even be able to wear it next summer.
The bloomers and socks are from GAP if you're looking for something similar.