Operation: Baby 2020 (Girl)

Louisa, a quaint vintage name, is an example of the idea that these days, old-style girls’ names are more fashionable when they end with an a rather than with an e, as in Julie/Julia, Diane/Diana. So for the next generation, Louisa may rise again, especially with the growing popularity of other Lou/Lu-starting names, like Lucy and Luna. Louisa reentered the US Top 1000 in 2014 after a 45 year absence.

Lushly elaborate name that makes Lucy more grownup and sensual. Carnie Wilson chose it for her daughter. Lucianus is an ancient Roman family name and Lucianus of Samosata was an early satirist. Heard most often in the Italian and Spanish cultures, Luciana is usually pronounced loo-chee-anna.

A versatile classic, Lucy is both sweet and solid, a saint's name, and the heroine of several great novels. First fashionable in England and Wales, Lucy is now a popular choice in the US, The Netherlands, and New Zealand.

Luella is a sleeker spelling variant of the girls' name Louella and is now more popular than the original. Sweet, but lively, it was a popular name in the the early 19th century, but fell out of favor in the 50s. Now, after a 60 year absence, it's back in the charts, in the US and the UK.

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.

Lydia is one of the first place names, after an area of Asia Minor whose inhabitants are credited with strong musical talent great wealth. Always among the US Top 1000 girl names, Lydia is a quietly fashionable classic.

The Lyla spelling variation has now superseded the original Lila — the former remains on the rise while the latter is consistently falling in popularity.

Lyra is a name with ancient and celestial roots that's finding new popularity thanks to its starring role in Philip Pullman's His Dark Materials series, seen in the movie The Golden Compass. Simple yet unique, Lyra hits the sweet spot between too popular and too unusual.

Macie is one variation that has become more popular than the original Macy, perhaps thanks to its resemblance to the stylish Maisie. While Macie is usually pronounced to rhyme with lacy while Maisie sounds more like crazy, there is undoubtedly some overlap -- and confusion.

Singer Macy Gray has popularized this cute and upbeat choice—once solely associated with the department store—a modern replacement for Stacy and Tracy.

Mae, a sweet and springlike old-fashioned name, hadn't been on the national charts in forty years, but finally made it back in 2010. Mae is derived from May, the month name that was chosen for its connection to Maia, the Roman goddess of growth and motherhood.

Maggie is a cute, earthy short form that has been in style for several decades now, still sometimes used as an independent name by such parents as Jon Stewart. First used in Scotland, it got a large bump in popularity via the 1971 Rod Stewart hit song "Maggie May." Today's Maggie might just as well be short for a more adventurous name such as Magdalena or Magnolia as for the classic Margaret.

Maggie Gyllenhaal was born Margaret.

Maia was derived from the Greek word maia, meaning "mother." In Greek legend, she was the fair-haired daughter of Atlas who mothered Zeus's favorite illegitimate son, Hermes. To the Romans, Maia was the incarnation of the earth mother and goddess of spring, after whom they named the month of May. Maya is the more common spelling.

Part of the Mackenzie/Mackena/Mackenna family, this variation has a positive meaning.

Early 1980s sitcom (Family Ties) name that has been well used ever since, with an upbeat three-syllable sound and a slightly tomboyish edge.

Margaret is derived from the French Marguerite, which in turn came from Margarita, the Latin form of the Greek Margarites. Margarites was based on the Old Persian word margārīta, meaning "pearl."

Fanciful feminissima name created by L. Frank Baum for a character in The Patchwork Girl of Oz.

Thanks to Mariah Carey, everyone now knows this name – and is aware that Mariah's pronounced with a long i – just as Maria was in the Jane Austen era. And though Mariah now sounds modern, it was heard as far back as 1550 in Great Britain.

A midcentury Catholic classic that's not chosen by many parents today. Leonard Cohen fans might think of the beautiful song So Long, Marianne, named for his lover and muse Marianne Ihlen.