The cheerleaders and their squads have been out in force in recent times, plying their trade at everything from college football and basketball, rugby league, lacrosse ... At many sporting events, forget the on-field or on-court talent, these brave souls are the main act, with hours and hours of practice going on behind the scenes in the lead-up to game night. Here is a selection from the Getty Images photo library highlighting the glitz and glamour on the sidelines of late.