Frontman of Green Day, Billie Joe Armstrong has shared some photos from backstage of pop star Billie Eilish.

He posted a special photo with Eilish as you can see below, and also wrote:

“That was an excellent show!. Thanks so much @billieeilish and @finneas . ! #BillieilliB”

See the Instagram post of Armostrong below.

Billie also shared another special photo from that night with this caption:

“Night out with these loves!! @jakub @mnnesotagirl”

View this post on Instagram

Night out with these loves!! @jakub @mnnesotagirl

A post shared by Billie Joe Armstrong (@billiejoearmstrong) on