Anna has become the dominant form of the Ann family, offering a touch of the international to English speakers and a bit more style than the oversimplified Ann or Anne.

Hannah is one of the nation's top biblical girls' names — it surpassed Sarah in 1998, and ranks in the Top 100 along with Elizabeth, Abigail, Chloe, and Naomi. Hannah is a name with many sources of appeal: Old Testament roots, soft and gentle sound, and a homey yet aristocratic image.

Isabella has been a Top 10 name for girls in the US for two decades now. The Latinate form of Isabel, a variation of Elizabeth which originally derived from the Hebrew name Elisheba, Isabella reigned as Number 1 in 2009 and 2010.

Mary is the English form of Maria, which ultimately was derived from the Hebrew name Maryam/Mariam. The original meaning of Maryam is uncertain, but theories include "drop of the sea" (from Hebrew roots mar "drop" and yam "sea"); "bitter" (from Hebrew marah "bitterness"); and "beloved" (from the Egyptian root mr).

Abigail has been in for so long -- the name has ranked in the US Top 100 since the late 1980s -- it's amazing that it isn't more out by now. But Abigail's biblical and historic roots make it a fashionable classic rather than a passing fad.

Elena is at its most popular point ever in the US, thanks to its cross-cultural appeal and the overall popularity of El- names. It's more international than Ellen or Eleanor, but still accessible.

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.

Sweet and stylish, with a sporty, energetic undertone, Everly is a name that ticks lots of boxes.

A lovely musical name (remember the old Eric Clapton-Derek & the Dominos song?), Layla's seen a significant surge in popularity, partly partly all names with a double L are stylish, and partly because all the forms of the name push it into the Top 15 for girls.

Almost like a fusion between vintage Audrey, bubbly Ruby, and unisex Avery, Aubrey has been a popular choice for girls since the mid 2000’s.

Ellie first took off in the UK—yes, in this nickname form—and this warm and friendly name has also become hugely popular here. In 2011, Ellie entered the US Top 100 girl names for the first time and has remained near the top of the charts ever since.

You might think of Harper as the hottest name of the last decade, jumping from obscurity to the Top 10, where it remained until last year.

Piper is a bright, musical name that entered the list in 1999, one year after the debut of the TV series Charmed, which featured a Piper, and it's been a consistent riser since. Piper Kerman is the memoirist whose prison experiences provided the basis for the hit Netflix series Orange is the New Black.

Laura is a hauntingly evocative perennial, never trendy, never dated, feminine without being fussy, with long-standing literary links. All this makes Laura a more solid choice than any of its more decorative counterparts and one of the most classic girl names starting with L.

Since we wrote a book called Beyond Jennifer & Jason, Madison & Montana, encouraging parents to move beyond overused names, it's no secret what we think of this trendy surname name, inspired by a mermaid named Madison in the 1980s movie Splash.

Lilah may be a simple spelling variation of Lila— itself an alternative form of the Arabic Leila — or you might think of it as a shortening of Delilah or an Anglicization of the Hebrew Lilach, which means lilac. Whatever the root, it's a beautiful and stylish name. The final h adds balance or creates needless complications, depending on your viewpoint.

There are no less than ten different variations of Hailey on the current Most Popular list, but this is the spelling that brought it into the Top 10 of 2010, although it has quickly fallen in popularity. So, although Hailey has a shiny, unpretentious charm, its mass popularity makes it very much of the moment.

The Spanish Camila, pronounced ka-MEE-la, is the fastest rising version of this ancient Roman name, but recent royal Camilla may have helped promote the British brand.

Newly fashioned but familiar and with an on-trend, unisex feel, Addison seems like the perfect solution for anyone who can't decide between Madison, Adeline, and Alison.

Hadley, most famous as the name of Ernest Hemingway's first wife, is more sophisticated, professional, and modern than cousins Harley, Haley, or Hayden. The hit book The Paris Wife, a novel by Paula McLain told from the point of view of Hadley Hemingway (born Elizabeth Hadley Richardson), has helped popularize the name, which also appears on the vampire show True Blood. Hadley could become this generation's Hailey. Adley, a mashup of Hadley and Addie, has also appeared on the scene.