A Caitlyn Jenner Halloween costume has sparked concerns in Winnipeg's transgender community, with one advocate saying the costume oversimplifies the struggle many transgender people face.

However the makers of the costume, Spirit Halloween, say the getup is meant to celebrate Jenner, who they call a “hero.”

Two Jenner costumes are available in Spirit Halloween stores and online. One, listed as a woman's costume, replicates the cream-coloured corset that Caitlyn Jenner wore on the July 2015 Vanity Fair magazine cover.

Another costume, listed under the men's category, features a U.S.A. Olympic decathlon outfit, similar to the one Bruce Jenner wore during the 1976 Montreal Olympics.

Winnipeg-based transgender advocate Shandi Strong says the Jenner corset costume sends the wrong message about transgendered people.

"This is just an excuse for some beer-swilling dude to put on a dress and go: 'Hey, I'm a tranny,  look at me, " Strong told CTV Winnipeg.

"A transwoman is not a man in a dress -- furthest thing from it," she continued. "We are someone struggling with our inner femininity to try and be who we are."

In a statement to CTV News, Spirit Halloween defended the costume.

"At Spirit Halloween we create a wide range of costumes that are often based on celebrities, public figures, heroes and superheroes... Caitlyn Jenner is all of the above and our exclusive Caitlyn-inspired costume reflects just that."

Spirit Halloween wouldn't disclose how many Jenner costumes they've sold, but noted that the corset costume is selling "very well."

The manager of a Winnipeg Spirit said the retail stores have no say over which costumes are on the shelves.

"Literally everything comes directly from corporate," Kristin Kovich said. "Just like if they tell us to pull something off, we pull it off."

Strong said she doesn't have a problem if someone opts to dress like Jenner to support the trans community.

"If someone is going to wear it to say, "OK Caitlyn is my hero, I'm proud to support the trans community by wearing a costume like this,' then by all means," she said.

With a report from CTV Winnipeg