Soon though, Roberts started selling clothes as well. T-shirts decorated with wacky slogans, made by Roberts' friend Roger Lunn quickly became a trademark of Kleptomania.
Just like Roberts expected, Kleptomania developed elite clintele - The Who, Terence Stamp, Julie Christie, The Yardbirds guitarist Jimmy Page were all regular customers. Jimi Hendrix was a fan of frilly shirts made by a label Sam Pig In Love sold at Kleptomania. He wore one of his shirts during his performance in Savile Theatre in 1967.