Millie is back. It's a popular name throughout much of the English-speaking world, and broke the US Top 100 in 2024. Millicent would be an appealing long form, but many people are using Millie all by its cute self.

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.

This sweet nickname name has seen a recent revival in the US, breaking the Top 1000 in 2019 for the first time in 40 years. By 2024, it became one of the fastest rising girl names, chasing sister name Eleanor up the charts, spurred on by the rise of other vintage gems like Margot, Millie, Willa, and Lottie.

Hallie -- it rhymes with alley and is not to be confused with Halle or Hailey or Holly -- is one of those comfy nicknamish names that are in favor in these complicated times.

Bonnie is an adorable nickname name, heading back up the popularity list after a 50-year nap. A Top 100 girls' name throughout the rest of the English-speaking world, Americans are later to jump on the Bonnie bandwagon but now it's trending here too.

In the USA, Hattie is one of those nicknames that is now more popular than its parent name, Harriet. In England, however, Harriet is still by far more popular than Hattie, while in Australia, Harriet is highly popular while no data exists on Hattie. In the US, we’d like to see Harriet get more usage but we’re happy to see Hattie again.

Annie is one of the most open and optimistic, the-sun'll-come-out-tomorrow type of name, having been celebrated over the years in song (Annie Laurie), comic strip (Little Orphan Annie), folklore (Annie Oakley, born Phoebe), and film (Annie Hall). It strikes a nice old-fashioned-but-jaunty chord that still has appeal, but we do suggest that you consider putting a more formal version on her birth certificate.

Sweet and sunny but substantial too, Callie is a nickname-style choice that has long been used as a stand-alone option . Traditionally a diminutive of classic Caroline, it may also be used for Calliope, Camila, Callista, Calanthe, and beyond.

Lottie is a nostalgic great-grandma name that conjures up lockets and lace, and — like Nellie, Josie, Hattie, Tillie, and Milly — has considerable vintage charm.

Minnie was wildly popular at the turn of the last century — it was the fifth or sixth most popular name throughout the 1880s — but is completely obscure in the US today. Blame Mickey's girlfriend. Regardless, it's possible that the up and coming trend toward old-fashioned nickname-names — think Maisie, Mamie, Millie — may give Minnie (all on its own, not as a short form of anything) a new moment in the sun.

Effie is the old-fashioned short form for Euphemia. It shares a vintage charm with Hattie and Letty although is much rarer than either. Effie is a character in The Hunger Games and Sisterhood of the Traveling Pants.

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.

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.

Dottie and Dot are old Dorothy nicknames that some cutting-edge Brits are bringing back to fashion. It's been half a century since Dottie ranked on its own in this country, one of those nickname names that flourished in the 1890's.

Lettie, also spelled Letty, is a nickname name that until recently, had rarely been heard since the 1950s. Now, this treasured antique is on the rise, fitting right in with the trend for old-fashioned, down-to-earth nickname, such as Lottie, Hettie, Hattie, Josie, and Maisie.

Connie is a sweet and charming vintage nickname, which ranks in the top 200 in the UK and has a vintage charm that makes it ready for a comeback in the US as well.

Though not much in use, still retains a cozy Little House on the Prairie-type pioneer feel.

Allie is one short form that's gotten so popular it's often used as a name on its own. Cute, friendly, yet we'd recommend using one of the proper names such as Alice to give your daughter an option.

Ettie or Etty works as a nickname for any name with a prominent "et" sound, usually at the end: think Henrietta, Juliette or Colette. The -ette ending is a French diminutive suffix.

A surprise recent hit revival with cutting-edge British, Tribeca and Malibu parents; Tillie, also spelled Tilly, is cute, frilly, and sassy all at once. Tilly is currently Number 90 on the England-Wales popularity list, joining such other Top 100 nickname names as Milly, Maisie, Kitty and Lottie. Tillie along with these other short forms transform proper names rooted in other cultures into true English names for girls.