Teenager was surprised by her victory
The 19-year-old beat Analeigh Tipton and Samantha Potter to the title.
She impressed the judges and host Tyra Banks, 35, with her confidence on the catwalk.
I wasnt expecting it and it just goes to show if you keep trying you can reach your dreams, says McKey.
You try and tell yourself the entire time Im gonna win, Im going to be the winner.
‘I am optimistic and happy about it, but I never expected to win, Im ecstatic!
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