Roughly 1,000 of the hottest chicks in Texas went down to Houston this weekend ... to try out for a spot on the Texans cheerleading squad ... and TMZ Sports has pics from the smokin' hot audition.

There are 35 spots on the squad -- and EVERYONE needs to tryout ... including members of last year's team.

Right now, we're told the team has cut the roster down to 50 ... with final cuts coming in the next few days.