A favorite in England and Wales where nicknames as given names are very much the norm, Tilly has the potential to catch on in the US, given its similarity to the popular Lily and Ellie and the rising stars Millie, Billie, Kallie, and Nellie. 
 
Most often used as a nickname for the strong but lively Matilda, Tilly might also work for recently popular Ottilie. Other less obvious possibilities could be Chantilly, Talitha, Natalie, or Talia.
 
As a stand alone name, Tilly is cutesy but not flimsy, and in recent years, it has been racing up the US charts. Nearly doubling in usage since 2018, a recent count revealed Tilly is given to nearly 250 babies each year. When you combine this with the number of Tillies too, the figure is more like 400. 
 
Notable Tillys include Tilly Ramsay, daughter of Gordan Ramsay, and a chef, present and influencer in her own right; Tilly Keeper, an actress in British soap Eastenders; and Tilly Edinger, a German-American paleontologist who founded paleoneurology.

Tilly

A sassy, spunky name for the bold parent who doesn't remember Mrs. Ed Norton on The Honeymooners or who's into the nicknames-as-given-names trend sweeping the UK and returning to the US.
 Trixie is a standard nickname for Beatrix - another rising choice - and has been used by TV Presenter Emma Willis and Busted member Matt Willis for their daughter. 
Other namesakes include Trixie Mattel, the stage name of a popular drag queen and Trixie Belden, the thirteen-year-old heroine of an eponymous series in which she is a girl detective. Several children's shows have also featured Trixies, including Lazytown and My Little Pony. 
 
Trixie entered the UK Top 1000 in 2022, when 36 girls were given the name - with parents possibly drawing inspiration from Trixie Franklin, from the successful and well-loved TV drama Call the Midwife.

Trixie

This pet form of such names as Winifred and Edwina and Gwendolyn has loads of vintage charm, a la Millie and Maisie, with a decidedly winning vibe. And it just got celebrity cred as the baby daughter of Jimmy Fallon.
 Winnie had been used regularly on its own in the U.S. through the early 1950's and has a number of varied namesakes. There's the Pooh, of course, and also Winnie Mandela, former wife of South African President Nelson; Winnie Cooper, the charming girlfriend of the young hero on The Wonder Years--whose given name was Gwendolyn; Winifred "Winnie" Foster, a main character in the childhood classic Tuck Everlasting; and it was also a nickname for Winston Churchill.

Winnie

AdrianaRae's list "Cute Vintage Nicknames For Girls" of 3 great name ideas: Tilly - Winnie!

Cute Vintage Nicknames For Girls

These names are spunky, fun, and recognizable but have yet to be rediscovered.
They can all work not only as nicknames for other names but as full names themselves.

Cute Vintage Nicknames For Girls

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