布小熊

if you want to rent:
http://www.wattscostumes.com/displaycostumes.php?type=mascots
will you be in door or outside. gorilla suit may be too warm for any in door party.

I think it's best to call and ask.
http://www.thepartybazaar.com/
http://www.moremadnesscostumes.com/

Acutally, Dressew has a lot of supply if you want to DIY (prob not gorilla suit)
Dressew Supply Ltd
337 W Hastings St
Vancouver, BC V6B 1H6
Phone: (604) 682-6196