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Brad Pitt welcomes you to Super Bowl LV. pic.twitter.com/xYqgKDK3Hv

— CBS Sports (@CBSSports) February 7, 2021

Timothee Chalamet, Brad Pitt and Joel Edgerton attend Netflix Presents 'The King' Tastemaker at The London Hotel

More 📸 #TheKing 👉 https://t.co/t81m6SbrxT#TimotheeChalamet #BradPitt #JoelEdgerton #Netflix pic.twitter.com/lMdFp2fU6y

— Getty Images Entertainment (@GettyVIP) October 23, 2019

WEST HOLLYWOOD, CALIFORNIA - OCTOBER 22: Timothee Chalamet, Brad Pitt and Joel Edgerton attend Netflix Presents 'The King' Tastemaker at The London Hotel on October 22, 2019 in West Hollywood, California. (Photo by Rachel Murray/Getty Images for Netflix)

Bee.

WEST HOLLYWOOD, CALIFORNIA - OCTOBER 22: Joel Edgerton, Timothee Chalamet, David Michod, Brad Pitt and Nicholas Britell attend Netflix Presents 'The King' Tastemaker at The London Hotel on October 22, 2019 in West Hollywood, California. (Photo by Rachel Murray/Getty Images for Netflix)

After tonight’s Q&A for THE KING I swung by the reception and was wondering why the entire party suddenly convened in one corner of the room. Then I realized Brad Pitt had arrived.

— Jenelle Riley (@jenelleriley) October 23, 2019

Fun evening as Brad Pitt and his Plan B partners Dede Gardner and Jeremy Kleiner screened and celebrated THE KING, writer/director David Michod and stars @RealChalamet and @JoelEdgerton1 at an LA event packed with Academy members. All stayed/graciously mingled late into the nite. pic.twitter.com/wgC4JJS4n5

— Scott Feinberg (@ScottFeinberg) October 23, 2019

Jan. 12, Saturday

If Beale Street Could Talk event

He is wearing a gold band on the middle finger of his left hand.  Angelina has worn many bands but she has not worn any ring on her left hand since Sept. 2016.  The photo below is part of a sequence taken by Erik Anderson @awards_watch apparently from early in the evening when Brad first greeted Chalamet, perhaps as he had just arrived.  Enlarging Anderson's original photo (and not the screenshots reposted by fans), the shadows and highlights become clearer, showing the unmistakable shape and curve of a gold band. 
Brad is also displaying a new cord necklace and pendant -- a large, dark, carved figure.  His gold necklaces remain tucked under his shirt.
He shaved off part of his beard and trimmed his goatee.

 

In the close ups below, we can see what may be a black scarf covering his distal index and middle fingers, a glimpse of his palm between his proximal index and middle fingers, and the ring defined by highlights and shadows marking where it flattens, tapers and curves.  The close ups totally debunk the laughable theories that the band could simply be light.  Light cannot have shadows (that would defy the laws of physics), light from behind cannot pass through his palm, (that would defy human anatomy), and even if a bright light could be aimed with pin point accuracy to cover just exactly the width of the one finger, it would reflect on the neighboring fingers (no trace whatsoever).  Brad was unquestionably wearing a gold band in the photo.  It isn't the thick gold band with its distinctive diagonal lines, it may be a faceted design (see below), but it is a gold band.
Since Brad appears to still be holding his scarf, he may have just arrived at the event which took place after a screening.  He may or may not have other photos showing the ring or the scarf, but in this candid early photo, he clearly has both.  Before he put away his scarf and before he started to formally pose for photos, he was wearing a band.

The band appears to be similar to David Yurman's faceted band ring.

source

Brad Pitt and Timothée Chalamet reunited pic.twitter.com/BteNFpAawZ

— Erik Anderson (@awards_watch) January 13, 2019

Love this from tonight’s ⁦@BealeStreet⁩ event. ⁦@NicholasBritell⁩ , Brad Pitt, and ⁦@BarryJenkins⁩ pic.twitter.com/IQy4rHrOQs

— @jazzt (@jazzt) January 13, 2019

Timothee Chalamet, Brad Pitt, Barry Jenkins #ifbealestreetcouldtalk pic.twitter.com/caDk2rifPh

— @jazzt (@jazzt) January 13, 2019

Thanks Felicity, VICY, jordan932002