At the 2014 Grammys, Beyoncé and Jay Z definitely claimed the title of music's most powerful couple! The duo kicked off the awards show with a heated rendition of Queen B’s hit song, "Drunk in Love," which came complete with a chair dance, Beyoncé clad in a Nichole de Carle lingerie-inspired bodysuit and Stuart Weitzman heels, and Jay Z dashingly dressed in a suit and bow tie. The sexy performance was a clear indication that their love is going strong. Backstage post-performance, Jay Z guided a robed Beyoncé to greet friends like Pharrell Williams, and they were all smiles after their unforgettable opening.Before heading back out to enjoy the show, Bey quick-changed into a body-hugging, white Michael Costello mermaid gown with strategically placed lace detailing and sheer inserts. The couple got cozy in the front row and shared a loving embrace as it was announced that Jay Z (along with pal Justin Timberlake) won the Best Rap/Sung Collaboration for "Holy Grail" — where he thanked God and his wife — and dropped this gem: "I wanna tell Blue that, look, daddy got a gold sippy cup for you!" Signal the collective swoon. See all of Beyoncé and Jay Z's most memorable onstage moments in our gallery!