The Lyla spelling variation has now superseded the original Lila — the former remains on the rise while the latter is consistently falling in popularity.

Rhea is an old-style creative name of the Greek mythological earth mother of all the gods. A lot better than the Roman equivalent: Ops.

Lumi may be a rare girls' name in the USA and England, but it comes in the Top 50 in Finland, where it means snow. Given the popularity of Winter, Holly, Ivy and many other wintery-christmassy names, we think that short and spunky Lumi definitely has potential for greater usage outside its home country as one of the more unusual names for Christmas babies.

Opal is on the verge of a repolishing, following other jewel names like Ruby and Pearl. A Top 100 name during the first two decades of the twentieth century, the opalescent Opal has a good chance of coming back as another O-initial option.

Orla is an Irish name closely associated with the high king Brian Boru, as it was the name of his sister, daughter and niece. It was very popular in the Middle Ages – the fourth most popular name in twelfth century Ireland – and has become popular again in Ireland, Scotland, England and Wales today. In Irish, the name is commonly spelled Orlaith or Orlagh.

Mika is a sparky and stylish Japanese girls' name that translates easily to English. Also used as a Slovene and Hebrew diminutive for Mihaela and Michaela, as an alternative spelling to the Biblical Micah, and as a Greek diminutive of Dimitra (via Mimika), it is a truly multi-cultural choice.

The name of the sainted mother of the Virgin Mary was among the top girls’ names for centuries, in both the original English Ann spelling and the French Anne. Both left the Top 100 around 1970 but Anne is still among the most classic names for girls, although others are more likely to choose the original Hannah, the Anna variation, or even Annabel or Annabella.

Of all the botanicals, Fern has been one of the slowest to move back from the front parlor into the nursery, despite the appealing girl character in the children's classic Charlotte's Web. Fern was most popular from the turn of the last century through the 1940s, reaching a high of #152 in 1916. We can certainly see her rejoining the long list of popular greenery names.

First-wave Irish name and place name—the poetic name for Ireland—now supplanted by newer alternatives such as Maeve and Delaney.

Lula has a firecracker personality, a singing and dancing extrovert. Interesting that Lulu was a Top 100 name when the Social Security list was born in 1880, but it's been sliding ever since and has not been in the Top 1000 for decades. Modern parents in love with Lulu might well reverse that trend.

Three syllables in only four letters is quite a feat, but that's exactly what you get with Ilia, a versatile, unisex option with various origins. It could derive from the Greek Iliana, which could denote someone from Illium, or it could be a feminine form of Ilian, a form of Elijah. Alternatively, it is a Basque form of Julia, or a Bulgarian feminine form of Ilya, with again links back to Elijah. Currently a gender neutral option in the US, it may be exclusively masculine elsewhere.

The e-addition takes the name from slightly hippie-ish nature name to the place name of a picturesque island off the coast of Scotland, and for baby namers it's by far the more popular spelling.

Bright, spirited, and playful, Nyla shares sounds with the popular Isla, Lila, Layla, and Delilah, making it feel fresh and in style. A name with a number of possible origins, it made a brief, anomalous appearance on the US charts in 1941, before disappearing again for the next 60 years. It has been back in the US Top 1000 since 2001, and is currently on the rise, given to around 1230 girls each year.

Originally a feminine of John, Jean was popular in Scotland long before it found favor elsewhere, and had its most shining moment here in the era of Jean Harlow (born Harlean), ultimate symbol of silver screen glamour. Now, though there are many grandmas and even moms with the name, it doesn't seem all that baby-friendly. Though that could change, and Jean could join Jane.

This form of Agnes, Ines has always been popular since the true story of the thwarted lovers Queen Ines of Castro and King Peter of Portugal. This has to be one of the most heartbreaking and bloody true romances in history!

Zoey is a modern spelling variation of Zoe, the Greek Jewish translation of Eve. For a few years, it was even more popular than the original Zoe, but has now dropped back to the second-ranked spelling — not by much, however. In a recent year, Zoe ranked at #29 in the US, which Zoey featured at #59.

Alba is quietly making a behind-the-scenes comeback, perhaps thanks to actress turned baby-product mogul Jessica Alba. Last on the Top 1000 a century ago, the name was given to nearly 200 baby girls in the US last year. Alba might be tomorrow's successor to Ava and Ella. In Spain, Alba ranks among the Top 20 girls' names. Alba is the name of a character in The Time Traveler's Wife.

An up-and-coming nickname-style name, hugely popular in Germany and on the rise in the UK, Leni is stylish but sweet. Chosen for her daughter by high-profile German supermodel Heidi Klum back in 2004, Leni with its concise spelling and European feel is also on the rise in the US, alongside Lennie, Lenny, Lennox, and Lennon.

Edie is part of the Evie-Ellie et al family of cute and friendly short forms that sometimes stand on its own. Briefly popular in the 1960s, it could well be due for rediscovery. It's already a fashionable choice in the UK, where it has ranked just outside the Top 100 for several years.

Kara and the soundalike (though not necessarily related) Cara are among the most multi-cultural names around. Cara has roots in Latin, Italian, Irish, Spanish, and Portuguese, and Kara can be viewed as simply as K-starting version of Cara.