Twins Carla and Melissa Howe said they found it "strange" that the Olympian only flaunted his beauty products and calendar when he invited them to his room at Mayfair's K West Hotel at 6am on Sunday morning (December 9).
Carla - who slept on the sofa of Smith's room, while her sister took the spare bed - told The Sun: "Nothing physical happened between us and Louis.
"He was only interested in showing us pictures of himself and watching TV. He's a really nice guy but it was a bit odd. Most men are interested in more physical things. He showed us his hair straighteners."
She continued: "We thought his intentions were obvious but when we got to his room it was not what we expected. The first thing I noticed was all the beauty products. Dozens of creams and even hair straighteners.
"He gave us vodka then started showing us pictures of himself in a calendar. It was strange. He then started watching himself on Strictly, which he had recorded."
Smith previously admitted that he finds it hard to trust women after a "very painful" break-up with his only girlfriend.
Strictly Come Dancing Show 11: