Hilary Duff tour setlist includes 'What Dreams Are Made Of' performance

Hilary Duff isn't afraid to lean into nostalgia.

The onetime Disney star, 38, performed perhaps one of the most famous hits from her teen stardom days during a concert on Monday, Jan. 19. Duff, back on tour after a prolonged musical hiatus, treated fans to a rendition of "What Dreams Are Made Of" at O2 Shepherd's Bush Empire in London.

The 2003 song became a quasi-anthem for Duff's career after its first appearance in "The Lizzie McGuire Movie." The actress and singer starred in both the film, and a Disney Channel television show of the same name.

Hilary Duff 'With Love' dance transforms from meme to the stage

Duff also paid tribute to her mid-2010s era with a performance of the meme-worthy "With Love" dance from a 2011 visit to the "Today" show. She invited several fans onstage to dance alongside her, pop-locking with them to show once and for all, she's in on the joke.

Her U.K. performance may provide a sneak peek for fans of what's to come on Duff's upcoming tour – her first in over a decade. The tour marks a much-anticipated return to music with "Luck… or something," a new album set for release in February. She will travel to intimate venues across the U.S. to treat fans to her newest music (and perhaps, given Monday's events, some of her old tunes as well).

Duff will also celebrate the arrival of her new album with a pair of sold-out residencies in Las Vegas set for Feb. 13-15 and May 22-24.

Two singles – "Roommates," out earlier this month, and "Mature," out late last year – tease an album that showcases Duff in all her grown-up glory. The songs chronicle an age-gap relationship and a couple on the brink of losing one another, each with a more steamy and adult sound than characterized her Disney days.

Duff's return to music will be supplemented by an untitled docuseries from "Taylor Swift: The Eras Tour" director Sam Wrench. A release date and platform for the series have yet to be announced.

Contributing: Taijuan Moorman, USA TODAY