Reggie's ice cream man outfit

As an ice cream man in the 1970s, Reggie owned (and considering he owned the business, possibly designed) an appropriate costume - black leather vest with golden buttons, a white shirt, white pants and a black bow-tie (later a string bow tie).

Phantasm
Reggie wears the outfit pretty much throughout the film, as he spends the summer selling ice cream to children. Most notably, he has it on during the the trio's final visit to Morningside, where he cancels out a Dimensional Fork for the first time. Reggie is killed by the Lady In Lavender, but all of this is later revealed to be Mike's dream.

Phantasm IV: Oblivion
After locating Mike's hearse in Death Valley, Reggie dons the ice cream man garb once again as part of his preparations for a supposed final confrontation with the Tall Man, revealing that he's presumably carried it with him since he closed down his business during the events of Phantasm II.

Phantasm V: Ravager
Reggie emerges in the desert following an unknown conflict, his old outfit scuffed and tattered. After recollecting his 1971 Barracuda from a thief, Reggie forcibly takes his clothes and leaves the thief with the remains of his ice cream man outfit. The thief is killed by The Tall Man's spheres before he's able to put them on.

Later, Reggie finds himself in a post-apocalyptic reality, and once again wearing the tattered ice cream man clothes, casting doubt on the earlier events. According to the rebels, he's been there for a decade, possibly following the events of Phantasm IV: Oblivion. Reggie remains in his original clothes until the end of the film, when him, Mike, Jody, Rocky and Chunk head towards colder territory to try and gain the upper hand over the Tall Man.

Appearances

 * Phantasm (1979)
 * Phantasm III: Lord Of The Dead (1994) - Archive footage
 * Phantasm IV: Oblivion (1998)
 * Phantasm V: Ravager (2016)