"I suppose hobbits need some description nowadays, since they have become rare and shy of the Big People, as they call us. The are (or were) a little people, about half our height, and smaller than the bearded Dwarves. Hobbits have no beards. There is little or no magic about them, except the ordinary everyday sort which helps them to disappear quietly and quickly when large stupid folk like you and me come blundering along, making a noise like elephants which they can hear a mile off. They are inclined to be fat in the stomach; they dress in bright colours (chiefly green and yellow); wear no shoes, because their feet grow natural leathery soles and thick warm brown hair like the stuff on their heads (which is curly); have long clever brown fingers, good-natured faces, and laugh deep fruity laughs (especially after dinner, which they have twice a day when they can get it)." From The Hobbit, by J.R.R. Tolkein
The shirts were both made from MCCALLS 4952. Both are cut a size 4, with the arms being shortened for the green shirt.
I omitted the lacing on WP's shirt, because it fit him quite well without them.
I actually don't remember the pants pattern, but they are simple elastic waist pants, that I cropped into 'short pants'.
The yellow vest was made from Butterick 6894. Cut a size 4. It barely fit Si, so it was deemed his.
I just went ahead and self drafted a larger one for WP.
And of course every hobbit needs hobbit feet. Some scraps of fake brown fur attached to sandals - and voila!