I googled for some patterns and found this FAB site - http://www.made-by-rae.com/.
Next feeling very confident at the suggestion of making my own pattern by drawing round some shorts I decided to make some shorts for my little boy. They turn out OKish don't look to close at the stitching because I didn't do it on my normal machine it's not very straight. They were meant to be size 2-3yrs for my big 18mth old but they were way too big I was generous cutting out - they fit my 5yr old lol !!!
Yes he's shooting me but at least he stood still for me :-)