She shouldn't have kept you waiting, London...but she's here now.

Today (Sept. 27), the Legendary Miss Britney Spears takes to the stage at The Roundhouse in London to perform a set as part of this year's Apple Music Festival (#AMF10) — her second festival showcase in under a week, following her nearly half-hour long performance at the iHeartRadio Music Festival in Las Vegas this past Saturday night (Sept. 24).

UPDATE: Watch clips of Britney's #AMF10 performance below, and the full thing on Apple Music.

The show starts at 9 PM UK time (4 PM EST), and you can tune in to see it go down live on Apple Music.

Here's hoping this one will be a little bit more new and Glory-ous, and a little less Piece Of Me World Tour, considering she's got a whole new album to work with...

Until then, watch her iHeartRadio Music Festival performance as a warm-up below.

Britney Spears Kicks Off Remixed, Reimagined and Still Iconic Piece of Me Residency: