The event to promote the Kardashian Kollection clothing and home line happened early Saturday at the Sears at Willowbrook Mall, The Houston Chronicle reported.
Some fans started arriving at 2 a.m. to be guaranteed a chance to meet and get autographs from the Kardashians.
"We're just excited when we do our meet and greets to see how customers pair our clothing. Everyone wears it so differently," Khloe said in an interview before the event. "Even us. We all like the same thing but will wear it so differently."
Saturday was the first time the sisters made a group appearance in Texas, the Chronicle reported.
"We've never really come this way," Kim said. "We usually do our appearances in New York or LA. Khloe lived in Dallas for a while and Kourt when to college in Dallas."
On their line, the sisters said they design around their own personal style and body shapes.
"With our different body shapes, it gives us a great perspective on what we want to design in the collection. We do a lot of short suits with blazers that look so great on Kourtney, but I might just wear the blazer," Khloe said.