An medieval English form of Helen, the sensitive but clear-eyed Ellen has swung in and out of style for centuries, often alternating with the parent name. Ellen was the more common in medieval England, until after the Renaissance, when Helen overtook her. In Edith Wharton's The Age of Innocence, set at the end of the nineteenth century, one character wonders why another has not changed her "ugly" given name to something prettier, like Elaine—a statement few would make today.

Drew is an elegant formerly male-only alternative to Andy that joined the stylishly upscale Paige-Brooke-Blair sorority, thanks largely to Drew Barrymore. Barrymore comes by her first name legitimately: it was the maiden name of her paternal great-grandmother, Georgiana 'Georgie' Drew Barrymore, one of many esteemed actors in her family history.

The name Jo still evokes the spunky image of the character in Louisa May Alcott's Little Women. Its literary status makes Jo one of the OG boyish nicknames for girls, ala Frankie, Billie, and Stevie. If you like that form, you can lengthen it to Joey.

Less popular than the Bueller-inspired Sloane but following on its coattails, this name ranks toward the middle of the Top 1000, but we see both spellings sticking around for years to come.

Old-fashioned nickname with sweet turn-of-the-last-century charm that's become a favorite among the popular girl names starting with A of today. In fact, with all spellings of Adeline/Adalynn taken together firmly in the Top 10, and Adelaide and Addison also high in the charts, Addie is one of the most frequently-heard short forms around. But no matter how popular (or pandemic) it gets, Addie is undeniably one of the cutest names for baby girls. Little girls might like the fact that it's the name, though spelled Addy, of an American Girl series doll.

Once the quintessential bouncy teenager name, Kelly helped launch the trend of unisex Irish names . But it now takes a backseat to more substantial surname names like Kennedy.

Tony, as in classy. Or To-nyyy, as yelled out a tenement window.

This spelling adds a little more femininity to the neutral Lee. Leigh and sister Lee were quite popular in the 1960s and 1970s among the first cool wave of unisex names for girls, but now have vanished from the Top 1000. The Biblical Leah is preferred.

2012's Hurricane Sandy blew away whatever style currency Sandra retained from its 1960s Sandra Dee heyday. While in recent years it's been associated with Supreme Court Justice Sandra Day O'Connor, as a baby name Sandra is sinking beneath the waves.

Knight (as opposed to Night) is a name clad in shiny armor. This high-ranking word name was introduced by singers Kelis and Nas. Knight might join brothers King, Royal, and Noble in a new definition of royal baby names.

Chris is a long-running nickname used almost equally for boys and girls. While past its prime, Chris stands out as sounding completely appropriate for both sexes, perhaps because of its widespread use as a short form of both the popular Christopher and Christine. Chris manages to retain its crisp appeal even though its fashion moment is over.

Kim was the coolest name... of the 1960s. Kim was popularized by actress Kim Novak, and its energy is still maintained by rapper Lil' Kim, but it holds lil' or no appeal for new babies. Parents who like Kim's short, sweet sound might look to a choice such as Sam, Lou, or Belle.

Extremely amiable, open-sounding surname that's gradually being taken over by the girls.

Even if it is the Number one surname in the U.S.--with more than 2.5 million bearers--we still think that Smith would make a cool first or middle name, whether or not it has family history.

Cristina is one case where the streamlined version feels more alluring. Cristina is found more often than Christina in many European countries and cultures, including Spanish- and Portuguese-speaking Latin and South America.

A few decades back, this name -- which hardly shows its Irish roots -- evoked a man in a gray flannel suit; now, though still upscale, it's more likely to be attached to a female.

Leigh as a masculine name has Anglo-Saxon origins, derived from the Old English 'leah' meaning 'clearing' or 'meadow.' While Leigh has become increasingly popular as a feminine name in recent decades, it has a long history of masculine usage, particularly in England and English-speaking countries.

We usually think of place-names as a modern invention, but in fact Arizona ranked on the US Top 1000 from its inception in 1880 until 1911, when it vanished below the surface. It peaked at Number 510 in 1882, before Arizona became a state. One notorious vintage bearer: criminal "Ma" Barker, born Arizona Clark.

This rarely heard name pares down all the ultrafeminine Dan names to one that's much more powerful, for both boys and girls.

Grey is the more common spelling in Britain and Australia. This color name has a softness and ambiguity which makes it equally lovely for a boy or a girl.