Riley—an upbeat, friendly surname name—is red hot for girls and still going strong for boys. If you haven't been spending much time around babies recently, you may be surprised to learn that Riley is the most popular girls' name starting with R and also the Number 1 Irish name for girls in the US.

Ashley was a sensation in the 1980s and 1990s; it hit Number 1 in 1991. Ashley is still pretty but more and more parents are turning to newer names like Ashlyn and Aubrey, and spellings such as Ashleigh and Ashlea. If you hear the name Ashley in a playground today, it's more likely to be the mom than the little girl.

Hillary is a lovely name that, for the moment at least, is tightly bound to an individual with a strong image: Hillary Clinton. Whatever your feelings about Mrs. Clinton, her fame now dominates the name, making it feel less baby-ready than it deserves to be. Hillary as a name has so much going for it: the popular, rhythmic three-syllable structure, the fact that it's strong but light, proper but jaunty, with an irresistible meaning -- having the same root as hilarious. The Italian Ilaria may be one way to make the name fresh.

Though Shelby was trendier ten years ago, it's still a widely used choice.