It's an end of an era for Antonio Brown. No, we're not talking about his time as a Steeler. This is bigger news. 

Brown's blonde mustache is officially gone. RIP.

It was a great (?) run. 

The newest Raider posted to his Instagram Live that he's in Oakland and will be working out with quarterback Derek Carr on Tuesday. 

While Brown's trade to the Raiders cannot become official until Wednesday at the earliest (when the new league year begins), he's clearly eager to start working with the Silver and Black. "Mr. Big Chest" is in the gym and looking to start a strong bond with his QB. 

[RELATED: Antonio Brown, Derek Carr projected to have big 2019 season for Raiders]

Here's to hoping we see a silver 'stache soon.