Editors' note: this gallery is being updated throughout the convention.
The Star Trek 50th anniversary convention in Las Vegas attracts an out-of-this-world cosplay display. There are plenty of fans in Starfleet uniforms, but clever costumes also include an Orion slave girl, Santa Gorn and a strange Elvis-Trek mashup.
This spectacular Nero costume pays tribute to the villain of the first Star Trek reboot movie, from 2009. The makeup is spot on.
This service dog got into the spirit of the Star Trek 50th anniversary convention with an original-series red-shirt outfit, complete with a tiny phaser. Here, the pup posed with a collection of tribbles.
One of the more creative cosplayers roaming the halls of the 50th anniversary Star Trek convention in Las Vegas is this very-Vegas Elvis. It's not just a '70s Elvis jumpsuit. A lot of thought went into this elaborate costume, which also features Starfleet and Klingon logos.
If you're not sure why Abraham Lincoln is in attendance at the 50th anniversary Star Trek convention in Las Vegas, then you need to go back and rewatch the original series. The US president appears in an episode titled "The Savage Curtain."
The Star Trek fan on the right is dressed in an ingenious tribble costume. The fluffy alien critters are famous for eating a lot and being cute. The creature on the left is less well-known. It's a glommer, a predator bred by Klingons to hunt and destroy tribbles. Klingons and tribbles don't get along.
These two Star Trek fans were called up on stage with Whoopi Goldberg during the 50th anniversary convention in Las Vegas. They are both dressed as Guinan, Goldberg's wise and enigmatic character from "Star Trek: The Next Generation."
You might be wondering what a Greek god is doing at a Star Trek convention. This particular god is Apollo from the original-series episode "Who Mourns for Adonais?" Beside him is Falstaffian original-series troublemaker Harry Mudd.
Captain Picard and Data both had very close-up dealings with the Borg Queen. The costume on display here was one of the honorable mentions in the Star Trek 50th anniversary convention costume contest in Las Vegas.
A mind-boggling amount of work went into this Crystalline Entity costume. The deadly planet-chewing entity appearing in "Star Trek: The Next Generation." Guest judge Terry Farrell (Jadzia Dax from "Deep Space Nine") admires the cosplayer's ingenuity.
Jaylah appears as a main guest character in the latest Star Trek film, "Star Trek Beyond." This cosplayer had only seen the movie once, but it inspired her to make a Jaylah outfit and don the fancy makeup.
As the name suggests, Tholians are from the planet Tholia. The unusual orange aliens starred in the original-series episode "The Tholian Web." The cosplayer inside this massive outfit uses a video screen and camera to navigate.