finally tonight here, america strong. the invitation from the bride and the grandmother who said, yes. >> pop the champagne 'cause we're engaged! >> reporter: abby arlt and dustin mershon announcing their engagement last december. and over the weekend, they got married in mankato, minnesota. guests didn't know it but they were about to be surprised again. coming down the aisle first, the flower girl, georgiana arlt, abby's 92-year-old grandmother. >> i am so happy for abby and dustin that they included me in their special day. it's the first time that they've seen a 92-year-old grandmother being a flower girl. this was my first wedding besides my own.