Girls

An Irish and Welsh form of Catherine, Caitlin was a boom name of the eighties, rocketing from obscurity (Americans first heard it via the wife of doomed poet Dylan Thomas) to the height of popularity in the space of a decade. The original name was gradually eclipsed by its myriad spelling variations -- Katelyn and Kaitlyn both soon topping it on the popularity lists.

As 90s and early 2000s favorite Allie is starting to fall, Callie is feeling extra fresh. Callie is a nickname name that is currently more popular on its own than any of its longer versions. Callie was popular in the late 1800s when it was in the Top 200 for several years. However the name fell out of favor, eventually falling off the charts for some time. Callie has been rising again since the 70s, and it is now back in the Top 200 once again. In the popular show Grey's Anatomy, doctor Callie Torez's full name is the Greek Calliope.

Newly popular boys' name could cross over in much the way the related Cameron has.

Cara is a simple, sweet, Italian endearment that enjoyed its greatest popularity from the 1970s through the 1990s, reaching a high of Number 189 in 1977. Though the name has been on the decline in recent years, that could change soon due to the rising celebrity of English model/actress Cara Delevingne, who played Enchantress in Suicide Squad. Cara is a highly popular choice in Ireland.

Though a couple of its more "creative" spellings—Carli and Karlee, for example—are still on the rise, this feminine form of Carl, popularized by singer Carly Simon in the 1970s, could by no stretch be considered fashionable. Despite its decline, the name has still seen some use in the entertainment industry, from Nickelodeon's iCarly to Canadian pop singer Carly Rae Jepsen.

Languid, romantic, and classy, this variation heats up Caroline and modernizes Carol, adding a southern accent.

Caroline is a perennial classic, one of the elite group of girls' names that's ALWAYS ranked among the Top 1000 and that's been in the Top 100 since 1994. Elegant yet strong, Caroline calls to mind the Kennedy Camelot years and Princess Caroline of Monaco.

The name of the tragic mythological Trojan princess who was given the gift of prophecy by Apollo, but was condemned never to be believed, Cassandra has been used for striking characters in movies and soap operas. Ethereal and delicate, Cassandra was in the Top 70 throughout the 1990s but is now descending in popularity.

Caylee was the third fastest-rising name in 2009 and peaked then at Number 263, but has since dropped in the charts, perhaps due to the Caylee Anthony association.

Cecilia is a lovely classic name deservedly enjoying a new turn in the sun. Always among the Top 500 girls' names in the US, Cecilia is now at its highest point ever.

Celia, splendidly sleek and feminine, is a name that was scattered throughout Shakespeare and other Elizabethan literature, but still manages to feel totally modern.

French-Canadian singer Dion made us notice this variation. Although many parents would prefer the homonym Selene, which has a different derivation and means "moon," Celine has been a Top 1000 name every year since 2012, and was also on the list each year from 1994 to 2005. Celine is also a newly-chic French fashion label.

Charlie is one of the friendly, tomboyish male nickname names--another is Sam-- now used almost as frequently for girls: in 2015, it ranked higher on the girls list than on the boys list for the first time. That makes Charlie one of the most popular unisex names around today. The name Charlie, for females, has been jumping up the charts since it reappeared, after a 50-year hibernation, in 2005.

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.

Chloe is a pretty springtime name symbolizing new growth. Though slightly off its peak in the Top 10 in 2010, Chloe still ranks in the Top 20 and is solidly a modern classic.

Ciara is very popular in Ireland, more familiar here as the Anglicized Kiera or Keira. The uninitiated will tend to pronounce Ciara as the Italian Chiara, a form of Claire—kee-AHR-a or even see-AHR-a, like the American singer-songwriter Ciara. In the US, Ciara peaked in 2005, when it was the Number 150 name; it's since fallen down to Number 882.

Claire, luminous, simple, and strong, is one of those special names that is familiar yet distinctive, feminine but not frilly, combining historical depth with a modern edge. And though Claire is enjoying revived popularity, it will never be seen as trendy. Claire is also a great middle name choice.

Clara is a strong, lovely girls' name that's always ranked among the US Top 1000 girl names but has been climbing since the turn of this century. Now holding steady around Number 100, Clara is a modern classic, neither too popular nor too unusual.

Clarissa, the daintier version of Claire, has a long literary history of its own, having been featured in the novels of Samuel Richardson, Charles Dickens, and Virginia Woolf—Clarissa was the title character of Mrs. Dalloway—not to mention the 1990s teen sitcom, Clarissa Explains it All.