Kelly Clarkson looked ultra-romantic when she said "I do" to Brandon Blackstock yesterday. Here's a third pic from her wedding—click here to see the first photos she shared. Thnx Temperley 4 my beautiful dress! & thank you to my friend @JimVerraros & Maria Elena 4 the beautiful headpiece! pic.twitter.com/08FPoLloVw— Kelly Clarkson (@kelly_clarkson) October 21, 2013 Here's a zoomed-in look: Her long-sleeve, lacy dress was the Jessamine from Temperley. And her bejeweled headpiece was from…