ACADEMY Award winner and Hollywood A-Lister Natalie Portman surprised many yesterday by popping up at Melbourne's training session at Gosch's Paddock.

Here's how social media reacted to Portman's visit.

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Anyone who’s ever been around a footy club knows that you don’t walk in on day 1 and claim the pregnant, ex-skipper’s jumper number. I mean, that’s just basic footy etiquette. Most of this year’s @melbourneaflw recruits seemed to get it, but there’s always one . . Jokes @natalieportman you can borrow #6 Besides you’ve got a bit more to offer in the midfield than I do right now!

A post shared by Daisy Pearce (@daisypearce6) on Nov 28, 2018 at 2:49am PST

Natalie Portman, "keeping her eye on the red and the blue". pic.twitter.com/hXMuM1EfHO

— Melbourne, Australia (@Melbourne) November 28, 2018

There was a touch of Hollywood at @melbournefc training this morning when actress Natalie Portman popped in for a look with her young family. The star of movies like 'Black Swan', 'Closer' and 'V for Vendetta' spent time chatting with Demons coach Simon Goodwin. #7AFL #7News pic.twitter.com/VK9PgaEYLb

— 7 News Melbourne (@7NewsMelbourne) November 28, 2018

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Trade news: (Black) Swan goes to the Dees. Thank you for visiting the MCG today @natalieportman

A post shared by Melbourne Cricket Ground (@mcg) on Nov 27, 2018 at 8:34pm PST

OMG - so cool! @melbournefc
Natalie Portman Shows True Colours, Surprises Demons Training Session https://t.co/gR0c6ckNs7

— Sandra Sully (@Sandra_Sully) November 28, 2018

Happy to mentor her through a solid preseason in the gym.

— Talia Radan (@tradan_5) November 28, 2018

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Sorry @natalieportman the Paps follow me wherever I go ... thanks for dropping into work #starstruck

A post shared by Shannon Byrnes (@s_byrnes10) on Nov 27, 2018 at 7:46pm PST

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May the force be with you @natalieportman

A post shared by Angus Brayshaw (@angus_brayshaw10) on Nov 27, 2018 at 8:04pm PST

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Introducing @melbourneaflw newest recruit no. 6 @natalieportman ✨ #AFLW #Journeyto2019 #NataliePortman

A post shared by AFL Women's (@aflwomens) on Nov 27, 2018 at 6:09pm PST

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Welcome to Melbourne, @natalieportman! #AFL

A post shared by AFL (@afl) on Nov 27, 2018 at 7:04pm PST