We had a fairy princess party for my granddaughter when she turned 4. Her baby brother was the frog prince.
It ties together, give me a minute....
I made him a lime green fake fur, could be fleece or even just a cotton blend, head to toe zip up the front suit.
The hands had a bit of a scalloped edge to them but they were not noticeable. I made the hood that goes with it and put some puffed half balls of fabric on top for the eyes. Then I stitched a girls bracelet on top for the crown. Frog prince he was....
Then I took the eyes off and the crown. The hood was green like the garment and I sewed on some craft foam parts to make a beak. He became a pirates parrot. During the Trunk or Treat party for Halloween he sat on my hubby's shoulder and said goofy stuff like he wanted goldfish not silly crackers.
So, if you have a brother or hubby dressing up it might be fun to add a pirates bird to the mix.
This is the pattern I used.
http://sewing.patternreview.com/cgi-bin/patterns/sewingpa...
For Halloween we all dressed up in costumes that we from several different ones. Hubby used a mens renaissance shirt, really big off white over the head thing, usually worn with a kilt. Then he just wore his regular pants tucked into the tops of some old boots he had.
I wore a longish style skirt, one that has an elastic waist and pleats all the way down. It has layers, broomstick? maybe. Find a few hats around, at a thrift store or someplace and you have a great pirate look.
Here's what I mean.
http://www.ericas.com/projects/proj9801.htm
The decorations could be as simple as hat crafts from Hobby Lobby to making patches and fake peg legs from cardboard. It can be lots of fun.