Girls

First used during the Victorian craze for jewel names; it could rise again, along with Ruby and Pearl, though it doesn't have as much luster.

This was a 100 percent boys’ name until celebs Jason Sehorn and Angie Harmon bestowed it on their daughter, recently followed by Lisa Marie Presley, who used it for one of her (female) twins. Finlay is also now among the most popular unisex names.

The girls have Violet and Scarlet and Ruby and Rose, but for the boys there's a much more limited palette of color names. Gray (or Grey), is one exception, which could make for a soft and evocative--if slightly somber-- choice, especially in the middle. Kaitlin Olson and Rob McElhenney recently named their son Leo Grey.

Isla is a hit name throughout the English-speaking world but hasn't found the same popularity in other western countries, perhaps because its spelling and pronunciation don't make sense for those whose native language is not English. Think island without the final two letters.

Like Cassidy, Kassidy peaked near the turn of the millennium and has lost ground in recent years.

Yes, it's pronounced with a long o sound at the end, just like Margo and Margot. This spelling was popularized by supermodel, actress, and tragic Hemingway granddaughter Margaux, whose name spelling came courtesy of a bottle of French wine. (The original spelling of her name was Margot; she changed it when she heard her parents were drinking a bottle of Chateau Margaux the night she was conceived.) Margo itself is a diminutive of Margaret, which means "pearl" or, in its French version, "daisy." Margaret or Marguerite would be more stylish variations now.

Max was derived from Maximilian, a Latin name that originated from the Roman family name Maximus. The character name Max in the children's classic Where the Wild Things Are had an impact on baby namers. Max is a widely used name internationally.

Morgan has long been a traditional Welsh male name, a variant of the Old Welsh name Morcant, from the Welsh elements mor, meaning "sea" and cant, "circle." The female Morgan is unrelated to the male version—it is a name from Arthurian legend created for Morgan le Fay, King Arthur's half-sister and famed sorceress. Her name comes from Morgen, an Old Welsh name meaning "sea-born," and is related to the Irish name Muirgen.

A French variation of Natalie that's used occasionally in contemporary America. In England and Wales Natalie remains about 10 times as popular as Nathalie.

Chosen by aviators Charles and Anne Lindbergh for their daughter, Reeve is another single-syllable surname waiting to be borrowed by the girls.

Waverly, with its literary resonance and lilting three-syllable sound, could well become the next generation's successor to Kimberly. Its upper-crusty surname feel places it among the new stylish English names for girls, successors to Ashley and Whitney.