The Piggles are four of Alan Dart's creations: Squiggle and his twin sister Wriggle, their little brother Giggle, and Giggle's own toy pig Likkle Piggle. You can buy the patterns on Alan's website, at £4 per pair or £7 for all 4 characters.
And for Christmas, Alan has designed special new outfits for them all. Squiggle is dressed in a Santa suit, and Wriggle is a pink fairy, Giggle has a pixie outfit, and Likkle Piggle is dressed as a toadstool.
The outfits are removable, and cost £4 for all four. You can see more details here.