Carrie Underwood ditched her signature sparkles and ... many fans were shocked by her more casual appearance. “I think she is great but, all honesty, I can't recognize her.

One of the things you may not know about Carrie Underwood is that she has struggled ... ever seen wearing eyeglasses and has traded her casual, laid-back style for a more glamorous appearance.

Some of these awkward moments quickly went viral, leaving viewers with plenty to talk about and sparking a wave of comments ...