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Isabel derived from Elizabeth in southwest Europe during the Middle Ages. It was originally written as Elisabel, but the first syllable was dropped as it spread across the continent. In Spain and Portugal, Isabel and Elizabeth are considered to be variations of the same name, but they are treated as separate names in other European countries and the US.

Isabella has been a Top 10 name for girls in the US for two decades now. The Latinate form of Isabel, a variation of Elizabeth which originally derived from the Hebrew name Elisheba, Isabella reigned as Number 1 in 2009 and 2010.

The Isidora spelling, though equally legitimate, is about 90 percent less common than Isadora.

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.

The quirky, offbeat and energetic botanical name Ivy is enjoying a deserved revival, propelled even higher by its choice by high-profile parents Beyonce and Jay-Z for daughter Blue Ivy. Ivy is also traditionally used at Christmas, make this one of the perfect names for December babies.

A sweet name with many cross-cultural ties: it's an equivalent of Jane in languages including Czech, Slovak, Dutch, German, Slovene, Catalan, Estonian, and Latvian.

Justine is a French name that's never reached the popularity we think it deserves. Like its far-more-common brother Justin, Justine is sleek, and sophisticated, but still user-friendly.

Lush and unusual.

Karin was a fairly popular spelling variation of Karen in the US but fell off the Top 1000 in the late 80s, as Karen's popularity wained. Today, the Karen meme interferes with the otherwise appealing sound of this name.

One of the few K names that sounds middle-aged.

Khaleesi is an invented name introduced to the world by inventive and prolific author George R. R. Martin for his wildly popular Game of Thrones series—it's Dothraki for "queen" and is one of the titles of the character Daenerys. It entered the US Top 1000 in 2014.

Khione was the name of several minor figures in Greek mythology, of which the most notable is the nymph who Hermes turned into a snow cloud. Khione works as both a high-brow mythological name and a Kardashian-trendy K name.

Kona is strongly associated with the Kona coffee of Hawaii. The Hawaiian word kona means "leeward" or "dry side of the island," and Kona districts are where Kona coffee is grown. It's a unisex name in Hawaii, with an appealing simple, strong sound.

A unique combination of a surname feel and dainty femininity. It's currently associated with actress Lacey Chambert.

Laguna Beach is a famous California spot -- though there's "goonie" teasing potential.

Larissa is a nymph name that's daintily pretty and a fresh alternative to Melissa or Alyssa. Though this is the more common variation in the Western World, the original is actually Larisa.

Lila is one of the girl names with a double l sound — Lila, Lola, Layla, Leila, Lily et al — that have caught on in a major way., Delicate yet dynamic, Lila has a slightly international flair.

Lilit in the Top 20 girls names is Armenia. Outside of Armenia, Lilit might be confused with Lilith, but is worth considering as a name in its own right.

Lilith is derived from the Akkadian word lilitu meaning "of the night." In Jewish folklore she is portrayed as Adam's rejected first wife, who was turned into a night demon for refusing to obey him. Lilith is unrelated to most other Lil- names, with the exception of Lilita, which is the Latvian variation.