Baby Girl

Beatrix has a solid history of its own apart from Beatrice, with that final x adding a playful, animated note to the name's imposing history and stately vibe.

Charlotte, the name of the young Princess of Cambridge, is the latest classic name to join Sophia, Emma, Olivia, and Isabella at the top of the popularity list. It is now among the most popular girl names in many English-speaking and European countries.

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.

Ezra is a biblical favorite for boys that's been making inroads into the girls' Top 1000 recently and continues to rise.

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.

Rey, a Ray-soundalike that has ranked on the boys' side for the past 15 years, is about to get more popular for girls too, now that it's the name of the new heroine of the latest Star Wars movie. While the sound of the name is nothing new, the royal connection is, joining names such as Reign (Kardashian) and Charlotte (the new Princess) in an expansive definition of royal baby names.