The show must go on! Diana Ross braves a broken ankle to sing for President Obama in TNT Christmas special Read more: http://www.dailymail.co.uk/tvshowbiz/article-2245665/Diana-Ross-overcomes-broken-ankle-sing-President-Obama-TNT-Christmas-special.html#ixzz2EckC1doN Follow us: @MailOnline on Twitter | DailyMail on Facebook