'Grey's Anatomy' Season 13 Spoilers: Shonda Rhimes Hints At Start Of Filming With Ellen Pompeo

(Photo : Getty Images/Frazer Harrison) The cast of "Grey's Anatomy" season 13 will start filming next week.

"Grey's Anatomy" season 13 executive producer Shonda Rhimes may have just hinted that the filming for the upcoming episodes has begun.

And #GreysAnatomy13 has officially begun: @msdebbieallen, @EllenPompeo & half the crew just shook it on the dance floor. I love these peeps!

— shonda rhimes (@shondarhimes) July 30, 2016

On her Twitter account, Rhimes welcomed cast members Ellen Pompeo and Debbie Allen back on the set of the hit ABC series.

The exec shared to her more than a million Twitter followers that Pompeo, Allen and the crew of "Grey's Anatomy" danced together.

However, other details about the gathering were not revealed.

You really haven't lived until you dance the night away to the Whole lemonade album w @shondarhimes and @msdebbieallen #Shondalandproblems__ — Ellen Pompeo (@EllenPompeo) July 30, 2016

You two have MOVES! @EllenPompeo @msdebbieallen  https://t.co/Zg8ZFmFaak

— shonda rhimes (@shondarhimes) July 30, 2016

We had a great time last night! Ladies lets get in formation @shondarhimes @EllenPompeo  https://t.co/nSfoLSbCIZ — Debbie Allen (@msdebbieallen) July 30, 2016

#aboutlastnight @EllenPompeo #GreysAnatomy13 pic.twitter.com/2Zat46t7PR

— Debbie Allen (@msdebbieallen) July 30, 2016

Meanwhile, Pompeo and Allen had a blast during their recent outing.

On their respective social media accounts, the co-stars shared a photo with each other.

Pompeo also tweeted about dancing the night away to Rhimes' Lemonade album.

In other news, it is unclear whether or not Pompeo and Allen were really on set for the filming of the upcoming episodes.

First production meeting of season 13 #GreysAnatomy done and dusted. All departments ready to roll next week! — Karin Gleason (@karingleason) July 28, 2016

Last week, "Grey's Anatomy" producer Karin Gleason tweeted that the cast will be back on set starting next week.

Who doesn't love @JasonWGeorge? #GreysAnatomy season 13 kick off party last night. pic.twitter.com/hW1Z2f2PYR

— Karin Gleason (@karingleason) July 30, 2016

Let's go #GreysAnatomy! Season 13 kickoff party last night. pic.twitter.com/vGFqqeSNrI — Karin Gleason (@karingleason) July 30, 2016

She also shared some photos from the kickoff party that was attended by the cast members and execs.

"Grey's Anatomy" season 13 will premiere on ABC on Sept. 22 at 8 p.m. ET.