Riley -- an upbeat, friendly Irish surname name -- is red hot for girls (though still going strong for boys). Currently, around five-thousand girls are named Riley each year! It's now Number 45 for girls--not to mention Rylee, Ryleigh, and other popular variations. Riley is one of the few contemporary androgynous names that did not lose its masculine power when it became popular for girls.
Newsperson Norah O'Donnell has a daughter named Riley Norah.