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.

Grace, a simple and pure virtue name which originally referred to divine grace, is a fashionable classic. In the early 2000s, it seemed headed for the Top 10 but pulled back from the upward trajectory, which you may consider a very good thing.

Chloe is a pretty springtime name symbolizing new growth. Though slightly off its peak in the Top 10 in 2010, Chloe still ranks in the Top 20 and is solidly a modern classic.

Zoe is one of those surprising names that has been on the Top 1000 nearly every year since 1880, but it's only since the turn of this century that it's ranked in the Top 100.

All the old ae/ay middle names for girls are back — Kay, Fay, Mae/May — and Rae is one of the coolest, used as such by celebrities as Mark Wahlberg and Daniel Baldwin.

A widely used name, Kaylee pulls together something from Kayla and something from Hailey, yet somehow loses something in the process. It has surpassed cousin Kayla on the charts and is one of three girls' names starting with Kthat ranks in the US Top 100.