This tiny seven-year-old boxer packs some punch and her sparring and jabs have earned her a massive following on Instagram. Pint-sized pugilist Ruby Tucker may stand just 4ft tall, but she is already well on her way to achieving her dream of becoming a professional boxer. Featherweight Ruby trains with her dad Kijuan Tucker, 36, four times-a-week and, in her downtime, hones her sparring skills by studying YouTube videos of boxing's all time greats.