Cycling champ Lance Armstrong has laughed off reports he is romancing Donald Trump's model daughter IVANKA. Ivanka, whose mother is Trump's first wife Ivana Trump, was reported to have enjoyed "several dates" recently with the sports ace, who ended his engagement to Sheryl Crow in January (06). While Ivanka tells America's People magazine the pair are "just friends", Armstrong's publicist insists, "Lance and Ivanka are not dating."