This is the moment Beyoncé was spotted dancing to her own song Love On Top at the wedding of her former assistant Sam Greenberg.<br /><br />The 'Texas Hold 'Em' singer, 43, attended the wedding in Nantucket, Massachusetts, US, with husband Jay-Z, 54, and daughter Blue Ivy, 12, on Saturday (7). <br /><br />A wedding guest captured a video of the A-lister dancing to her hit with the bride.<br /><br />The Single Ladies singer — who just celebrated her 43rd birthday - can be seen wearing a floral maxi dress, greeting other guests with hugs and smiles.
