AceShowbiz - Cycling ace Lance Armstrong has announced his retirement from the sport so he can "devote" himself fully to his family. The seven-times Tour de France winner welcomed his fifth child into the world last year - his second with girlfriend Anna Hansen.

Cancer survivor Armstrong, who previously dated singer Sheryl Crow, made a cycling comeback two years ago but he has now turned his back on racing for good. In a statement he says, "Today, I am announcing my retirement from professional cycling in order to devote myself full-time to my family, to the fight against cancer and to leading the foundation I established before I won my first Tour de France."

Armstrong's last race was during the Tour Down Under in Australia last month.