Spanish pop star Alejandro Sanz dedicated a song to Jennifer Lopez's unborn twins during a concert in New York on Friday night (25Jan08). The singer was performing at Madison Square Garden when he took a moment to pay tribute to pal Lopez, hinting that reports she's expecting twins are true. After Lopez's husband Marc Anthony joined the Spaniard for a duet, Sanz dedicated La Vez to the pregnant actress/singer. He told the thrilled crowd that Lopez was among his guests at the show, adding, "(This is) to the most beautiful mother in the world. This is for you both, for your children, those children are blessed." As WENN went to press, Lopez is rumoured to have prepared herself for the delivery.