Kylie Minogue has poked fun at Madonna for the cheerleader outfit the 53-year-old has worn on stage during her world tour. The songstress, who herself wears a revealing black web dress in the music video for her latest single 'Timebomb', took a swipe at the 53-year-old 'queen of pop' for dressing too young, Stuff reported. Minogue's comment, which came after some prompting, occurred during her appearance on 'Fashion Police', the catty American chat show co-hosted by comedienne Joan Rivers and Kelly Osbourne . Rivers showed a picture of Madonna dressed as a cheerleader and asked Minogue for her opinion. "No - just no," Minogue said. Taking a cue from the singer, even the host took a swing at the pop star. "Madonna, stop it already, you're 108. Madonna as a cheerleader? What school does she go to? Our Lady of Osteoporosis? She looks like she flunked 10th grade 48 times," Rivers said. Rivers then asked Minogue...