Brynn outshines the original Welsh Bryn in the popularity stakes. This simple, brisk name might be seen as a combination of Bree and Lynn, an androgynous-sounding choice that especially in this spelling is not truly unisex: Brynn, for boys, is not even in the Top 1000.

The jazzy, ultra-cool Dexter, like most names with an "x," has a lot of energy and dynamism.

Craig is a single-syllable baby-boomer name, still common in its native Scotland, but most modern Americans would prefer something like Kyle.

The combination of Emily and Emma's popularity -- and the fact that Desperate Housewives star Teri Hatcher's daughter is named Emerson -- have put this formerly strictly boys’ name, embodying the gravitas of Ralph Waldo Emerson, in the limelight for girls.

Sawyer is one of the top unisex names, used for their daughters by such parents as Sara Gilbert, co-host of The Talk and former actress on Roseanne, currently on The Conners.

Despite a rich history in Irish myth preceding its plantation appearance in Gone with the Wind, widespread use in the seventies caused Tara to lose its Irish accent.

A strong, straightforward Irish unisex surname, with a merry glint in its eye, Reagan has been leaping up the popularity lists, to become one of the top girl names starting with R. Some will inevitably link it to President Ronald, but spell it Regan and it's a Shakespearean name: a daughter of King Lear.

Best known as the beautiful heroine to whom Cyrano de Bergerac says, "Your name is like a golden bell".

Once a macho biker name, Harley is now showing its softer side. In the UK, Harley is predominantly masculine, but it's currently more popular for girls than boys in the US.

One of the surname names for boys on its way to becoming unisex, this name broke into the Top 1000 for the first time in 2013 for girls. While it sounds masculine to us, because of its two-syllable er-ending sound so trendy with boys’ names, many parents apparently disagree.

A name with a bit of glamor but also cowgirl vibes, Dallas entered the US Top 1000 for girls in 1992. It fell out of style during noughties, but reappeared in 2012 when other gender neutral names like River, Sawyer, Rowan, and Blake were also climbing fast.

Alison has been long popular in Scotland and widely used here since the fifties. This more feminine medieval elaboration of Alice had long surpassed the original in popularity, but now sounds a tad dated in the U.S., with Alice having leapfrogged back over Alison, Allison, Alicia and other variations.

Very popular surname choice — it's in the Boys' Top 100 — beginning to catch on for girls. First female association: novelist Carson McCullers.

One of the warm and earthy Russian nickname names now coming into style. Denzel Washington gave his daughter the Katia spelling.

Like many passé boys' names, this one sounds fresh again for girls.