Kit is a crisp, old-time nickname with plenty of spirit and style. In the UK it's a rising star for boys, while in the US, it is trending upwards for girls too.

Keira is an attractive girls’ name that's gotten a huge boost from the meteoric rise of Keira Knightley. Original spelling Kiera, which relates more directly to the male Kieran, was the more popular form until the rise of Keira Knightley reversed the order. Both are Anglicized versions of the Irish Ciara.

Karen, a once sweet Danish import, was so popular during the baby boom (Karen was Number 3 in 1960) that it's become a mem in recent years, representing a hostile white woman—one who usually wants to speak with the manager.

This endearing nickname name is one Katherine pet form that predates all the Kathys and Katies, having been fairly common in the eighteenth century. With the current mini-craze for animal-related names, Kitty is sounding cute and cuddly again—she's already jumped back onto the U.K. list, at number 199.

Kiki is one of the Coco-Gigi-Fifi-Lulu bohemian-type French nickname names from the turn of the last century, which have endless energy and sparkle. Artist Kiki Smith is its most well-known contemporary representative, and Kiki was the inspiring heroine of Zadie Smith's On Beauty. Kiki can be a nickname for any name beginning with the K sound, from Katherine to Christina to Kayla.

This appealing multi-cultural name, pronounced KYE, is beginning to be used for girls as well as boys. Among its many derivations and meanings: "sea" in Hawaiian, "forgiveness" in Japanese, "willow tree" in Navajo, "food" in Maori, and "earth" in Scandinavian. For girls, it debuted on the US Top 1000 in 2010.

Kali is a number of different things: a playful, contemporary twist on the name Callie; the Hindu goddess of destruction; an alternative spelling for Kaylee; a short form of the Arablic Kalila, the Greek Kalista, or the African American Kaliyah; a masculine name in India; and a trendy form of Kali(fornia).

The hurricane blew this one out of the realm of possibility.

Originally an English surname, borrowed from the place name, Kendale, Kendall was given almost exclusively to boys until the 40s when it began to be used for a small number of girls each year. By the 80s, it was a gender-neutral choice, however, since the 1993 appearance of the character Kendall Hart in the soap opera All My Children, it has been leaning feminine.

Katniss Everdeen is the heroine of the popular Hunger Games trilogy by Suzanne Collins, whose name comes from the (very real) edible aquatic plant of the genus Sagittaria. Katniss's father tells her that if she "finds herself," she'll never go hungry. Other unusual botanical names in the series include Primrose, Posy, Rue, and Clove, all for girls. Several of the boys' names come from ancient Rome: Cato, Seneca, Flavius, Caesar. Katniss the name has less appeal than Katniss the heroine, though it's definitely more attractive than Renesmee.

Unisex name around for several decades for boys and now ripe for girls.

Kia is a sweet, simple name that is now, unfortunately, associated with a Korean car label. Better today: Nia, Thea, or Keira.

Kiernan Shipka, aka Sally Draper on Mad Men, brings this Irish surname into the girls' column. And, like Kieran and Tierney and Tiernan, it's one of the perfectly unisex baby names. Only 14 girls were named Kiernan in the US in a recent year...and three times as many boys. If you want to move beyond Riley and Kennedy to one of the more unusual surname-based Irish names for girls, this may be a good choice.

A funkier version of Coco that may be more appealing if you have Japanese or Native American heritage. Koko comes from the Blackfoot tribe, native to what is now Montana and Alberta, Canada.

Kerry is the name of one of the most beautiful and lush counties of Ireland was a seventies favorite. Related, updated versions might include Cerys and Keira.

The next Destiny? Kismet seems like it might be fated for increased use.

Kieran is a boys' name that could cross over, as an update of outmoded Karen or a variation on trendy Kiera (or Keira or Kyra). Keren Ann is an Israeli-born singer. The proportion of babies named Kieran who are girls is less than ten percent, but is slowly growing. Kieran had an increase in use for girls in 2022.

Energetic choice that bounces off the tongue.

Keke is a multicultural double-punch nickname, notably borne by actress Keke Palmer. Palmer was born Lauren Keyana, yet her nickname does not derive from her middle name — her older sister had an imaginary friend named Keke.

This feminine name, pleasingly reminiscent of Kismet, has a similarly lovely meaning: Rainbow.