Here is a plush monkey costume from In Character. New in package.  Size 3T (for height 36-38 inches, weight 29-32 lbs - which falls in the 2T range for some other brands).

In Character Lil' Monkey Costume - "Lined zippered jumpsuit, attached tail, hood with ears, and shoe covers."

Please email me with any questions or for more pictures.  All of my listings come from a smoke free environment.  I have other clothing and costumes available in my eBay store and I am happy to combine and reduce shipping charges for multiple purchases.  Thanks for looking.