Diva face-off! Nicole Scherzinger and Jennifer Lopez battle it out at Summertime Ball at Wembley Stadium - but who won?

By JODY THOMPSON Where's Harry Hill when you need him? Jennifer Lopez (l) and Nicole Scherzinger (r) were both battling it out on the bill of the Capital Radio Summertime Ball tonight at London's Wembley Stadium They're judges on rival talent show over in the U.S. - but it was up to 75,000 music fans at London's Wembley Stadium to decide who was the best after both Nicole Scherzinger and