Elsie is a sweet vintage nickname-name turned modern star. After a 30-year hiatus, Elsie started climbing the US popularity list 20 years ago and is still headed for the top.

Lily is the most popular of the popular delicate century-old flower names now making a return, thanks to its many irresistible attributes: a cool elegance and a lovely sound, a symbol of purity and innocence, and a role in Christian imagery.

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.

Elise is one of those golden names that stylish but not TOO popular. Its appeal is due in large part to its French flair and to the love for El-names in general.

Eliza is a name with a wonderful combination of streamlined zest and Eliza Doolittle charm and spunk. It's a classic that's popular right now -- but not too popular.

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.

Birdie was until recently a middle-aged Ladies' Club member wearing a bird-decorated hat --but now it's just the kind of vintage nickname (think Hattie, Josie, Mamie, Millie) that's coming back into style in a big way. Actress Busy Philipps named her baby Birdie (inspired by First Lady Lady Bird Johnson), as did soap star Maura West.

Elvis naming his daughter Lisa Marie and Nat King Cole's hit song "Mona Lisa" conspired to catapult one of Elizabeth's many offshoots to a high of #4 in 1970.

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.

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.

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.

This Elizabeth nickname has a decidedly retro feel--think Betsy Ross and the Betsy Wetsy doll-- once seen as a perkier, younger-sounding alternative to Betty. But with Betty on the brink of a comeback, pigtailed Betsy could return as well.

Through all the years when Betty, Betsy, Beth, Liz, and Lizzie were the Elizabethan nicknames of choice, the bubblier Libby was set aside, but today it may be the most modern of all—it has already made a strong comeback in England and Wales, where it ranks Number 139.

The sweetest and most sensitive of the pet names for Elizabeth, now also one of the most dated.

Lost in limbo for decades and decades, Elsa now stands a good chance of following along in the progression from Emma to Ella to Etta, thanks to the ice queen heroine who "Let It Go" in the wildly popular Disney movie Frozen. The name shot all the up to Number 286 (its highest ranking since the 1890s) in the year after the release of the movie, though it's now dropped back down the list in the US.

Combine the popularity of Betty White and Mad Men's glamorous Betty Draper Francis, with the residual sweetness of Ugly Betty's Betty Suarez, and the result is an impending return of the name. It's got presidential cred via Betty Ford and feminist history through Betty Friedan.

Lilly may contain one L too many for some people, though this secondary spelling of a name that's become wildly popular is still a popular choice. And the Lilly spelling does feel a bit less wispy, a bit more like a name as opposed to a mere flower, than the slender and delicate Lily. Lilly suggests the long-form Lillian, but it doesn't need to be an abbreviation for anything; Lilly can stand on its own.

Lisette, also spelled Lizette, is a dainty,, if somewhat dated, Gallic offshoot of Elizabeth. It reached its U.S. peak of popularity in 1999, then fell off the list in 2001.

Liza's heyday was the mid-1970s, following on the heels of super-popular sister Lisa. But thanks to the fact that it never became superpopular, Liza remains a name not especially tied to one generation or style.

Elyse hasn't been heard much since the 80s, but it's beginning to be reconsidered as a possibIlity again, now that it's not so much seen as a Mom name, as it was in the TV show "Family Ties." A spelling variation of Elise, it's another variation of Elizabeth. Many parents today would opt for Eliza.