It's a coveted title, previously achieved by such prestigious posteriors as those belonging to Charlotte Church, Denise van Outen and Ulrika Jonsson.
Now weather forecaster Sian Lloyd's beautiful behind has been deemed worthy of the Rear of the Year Award.
Neath-born Ms Lloyd, 49, beat off her younger competitors in an online poll to become the award's oldest winner.
Ms Lloyd said she was "honoured" and added: "Fifty is the new 30, I suppose."
This year's male title went to the winner of the BBC's Any Dream Will Do talent search Lee Mead.
He said: "I keep my bum in shape by plenty of gym visits - and, of course, doing eight performances of Joseph a night."