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.

Stella is a name with star quality and sparkle, that manages to sound both ethereal and earthy. Celestial but not otherworldly, it lands somewhere between the popular Ella and bold Seraphina.

Ella is a sweet, simple name that owes much of its current popularity to the popularity of other names, from Emma to Bella to Emily to Ellie.

Rose is derived from the Latin rosa, which referred to the flower. There is also evidence to suggest it was a Norman variation of the Germanic name Hrodohaidis, meaning "famous type," and also Hros, "horse". In Old English it was translated as Roese and Rohese.

Willa has become increasingly fashionable, with its combination of Willa (born Wilella) Cather-like pioneer strength and the graceful beauty of the willow tree.

The name of the Roman goddess of the moon, Luna is derived straight from the Latin word for moon, luna. Luna may be the name most likely to surprise someone from an older generation by its Top 10 status in the US and its widespread international popularity.

Strong but sweet, Leah is a classic name that doesn't feel dull or dusty. It's got plenty of dignity, grace, and pluck, making it a solid choice in the 21st century.

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.

Mila is a popular name that took a 125 year nap, ranking in the Top 1000 in 1881 and then not ranking again until 2006, after actress Mila Kunis appeared on That 70s Show.

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.

Fresh, bright, and sunny, Della could be an alternative to Ella, Delilah, or Adeline. Familiar but not yet overused, it combines the elements of contemporary favorites with vintage charm.

Calla is a botanical name that is much more distinctive than popular Lily or similar Callie. Rarely heard today, it did appear in the popularity lists in the last decades of the nineteenth century.

The name is derived from the term commonly used in the Book of Psalms, which has a many Hebrew scholars in confusion over its meaning. Given its context in the Bible, Selah is likely to mean "to praise" or "pause and reflect upon what has just been said." Lauryn Hill used this name for her daughter. It is the last word in Anita Diamant's novel The Red Tent.

Combine the charming heroine of the movie Legally Blonde with supermodel Elle Macpherson and the trend toward all names beginning with "el"—Ellie, Ella, Eleanor—and you have one hit name.

Belle has nothing but positive associations, from "belle of the ball" to "Southern belle" to the heroine of Disney's Beauty and the Beast. As if this weren't enough good things, Belle is also one of the most familiar and usable names that mean beautiful. Though it has been overshadowed by the Twilight-influenced Bella and longer forms like Isabella and Annabella, Belle has its own Southern charm and would make a pretty choice as a first or middle name.

Billie is a tomboy nickname name, part of the growing trend for using boyish nicknames for girls and now destined for stardom along with its most famous contemporary bearer, music sensation Billie Eilish.

Nola, a name with a sleek, enigmatic quality, was used for the much-pursued heroine of Spike Lee's 1986 breakout film, She's Gotta Have It, and again by Woody Allen in Match Point. It's a short form of the traditional Irish name Fionnuala. Nola reentered the US Top 1000 in 2008, for the first time in 50 years.

Kayla is a modern invented name that emerged in the late 1950s. It may have been inspired by the similar sounding Michaela, though it could equally have come about as a combination of the then popular name popular name Kay and the familiar -la suffix.

A lovely musical name (remember the old Eric Clapton-Derek & the Dominos song?), Layla's seen a significant surge in popularity, partly partly all names with a double L are stylish, and partly because all the forms of the name push it into the Top 15 for girls.

The Lyla spelling variation has now superseded the original Lila — the former remains on the rise while the latter is consistently falling in popularity.