Well, last night was nothing short of spectacular for the 17-year-old.
First she qualified for the women's 200 meter freestyle. She took a quick break and and not fifteen minutes later, swam her heart out in the 100 meter backstroke finals.
Her very first GOLD medal!
This is just the beginning for Missy--she still has FIVE more events to go during these games and we have no doubt there's more medals in her future.
But she has a little something to keep her motivated . . .
Missy is a big Justin Bieber fan and we have a feeling that this Tweet last night felt almost as good as hanging that gold medal around her neck!
CASTING CALL: Cambio and iJustine are looking for new internet talent. Find out more!