This is how the Tigger costumes have changed over the years.
1968-1997, January 12, 2003: Tigger is near-neon and inspired by his animated version, but with a black nose. This costume retired in Florida in 1995 and California and Paris in 1996. It also appeared in the groundbreaking ceremony of Hong Kong Disneyland in January 12, 2003.
Disney on Parade, 1973: This version of Tigger is a lot different from the one used in the Disney Parks. Though he looks accurate to the animated version, he is slimmer and has a shorter head, thinner and shorter stripes, and a slightly longer tail.
1995-present: While his body remains the same since 1968, Tigger's head becomes larger and rounder, his nose becomes bigger and black material in the mouth is between the two jaws. His tail is now attached to his back to prevent accidents with guests and not cause any trouble.
2004-2014, 2018-present: This Tigger costume is a closer match to his animated counterpart. The head is modeled after the 1995 version but with a pink nose. His ears, muzzle, and belly are beige. The ends of his pointed stripes overlap the edges of his belly. This variant is seen in Disney Live! shows and has an articulated head. A non-articulated version appeared for Disney Live! meet-and-greets and resurfaced to Disney on Ice's Dare to Dream in 2018.