Baby Girl

Margot is suddenly a star again. After a nearly-half century absence, it hopped back on the Top 1000 list in 2013 and is on the rise. The Margot spelling is now given to three times as many baby girls as the Margo one.

Penelope is an unlikely 21st century baby name success story. Off the Top 1000 for 25 years, Penelope jumped back on in 2001 and has been heading uphill ever since, propelled by the trend for mythological names, Spanish actress Penelope Cruz, and some high-profile celebrity babies.

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.

Scarlett Johansson is doing more for this sparky southern name than Scarlett O'Hara ever did. Since the turn of the 21st century, Scarlett has gone from an obscure literary name to one of the most popular girls' names starting with S, right after longtime favorites Sophia and Sofia.

As Meghan/Megan and Reagan/Regan show signs of wilting, along comes Teagan to take up the slack: definitely one to consider. The vast majority of American babies named Teagan are now girls. A variant spelling is Teaghan.

Tessa is one of those golden names that's been popular but not TOO popular for several decades now. Tessa has ranked in the Top 500 in the US since 1981 but has risen only once above Number 200.