Grammy Awards 2012

Adele's Hollywood Wannabes

See the stars – Julia Roberts! Britney! Beyoncé! – who are singing their own "Lovesong" to the Grammy-nominated star

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CHRISTINA AGUILERA

When Aguilera got to meet Adele backstage at her L.A. concert in mid-August, she had her photo taken with the star – like any teen fan: "'Someone Like You' is my favorite! Beautiful to see all her fans sing it tonight! ;) love u Adele," Aguilera gushed on Twitter.