I guess you could call this a collaboration, or rather, a contribution.
I designed these clothes to fit the various free animal dolls designed by Pica Pau that are approximately the same size. These include:

• Aurora Deer
• Bianca Hare
• Helly Lamb
• Irving Donkey
• Lenny Cat
• Madeleine Dog
• Oliver Frog
• Rita Fox

If you use the same yarn weight to make these clothes as the dolls, then they will fit perfectly. (I know Pica Pau recommends 8/6, but I have always been a user of 8/4).