Stateline Showgirls Keeping It On

On his Facebook wall, Kevin Taylor posts:

“Driving back to Spokane today, cutting through Stateline, and outside the Stateline Showgirls is this: ‘It’s back! Bikini Thursdays!’ And I’m thinking, who would go to a nude dance club for bikini Thursday? And what’s next? Parka Friday!! Bathrobe n’ Curlers Monday!! Put it ON, baby! Woo!”

Question: Anyone understand the concept behind bikini Thursdays at a strip club?