A new book has laid claims that American singer Diana Ross slept her way to the top of Motown in her quest to become the hit-making soul label’s top star.The book, “The Supremes: A Saga of Motown Dreams, Success and Betrayal”, an unauthorized biography by Mark Ribowsky, claims that Ross, 65, knew exactly from the first day she arrived at Motown what she needed to do to achieve her dreams.“Diana Ross, few knew outside of the Motown colony was on a fast track to rise to the top from the first day she got to Motown; not incidentally, that was also the first day she knew who(m) she wanted to sleep with to keep up the momentum,” the New York Post quoted Ribowsky as having written.“That, of course, turned out to be (Motown founder) Berry Gordy, but only after some other in-house romances. In no time, Ross would climb beyond (the Supremes) onto the A-list as a solo act, record six more Number 1 songs, and earn millions as well as top billing in two movies,” he stated.Ross' rep, Mark Young, did not respond to a call or e-mail, and there were no comments from Gordy either.