Name a more iconic duo. We’ll wait.

All five living former U.S. presidents headed to College Station over the weekend for a hurricane relief concert, called Deep from the Heart: The One America Appeal, at Texas A&M University. Stars like Alabama, Lyle Lovett, Robert Earl Keen, Sam Moore and Yolanda Adams performed, but so did one unexpected guest: pop star Lady Gaga. The "Million Reasons" singer tweeted a photo of herself standing behind the POTUSes past captioned, "Nothing more beautiful than everyone putting their differences aside to help humanity in the face of catastrophe."

Nothing more beautiful than everyone putting their differences aside to help humanity in the face of catastrophe. #OneAmericaAppeal pic.twitter.com/2TPdPonvWv

xoxo, Gaga (@ladygaga) October 22, 2017
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