Carrie Underwood has always made sure to let fans be a witness to her fitness. Exercise is an essential component of her day, to help keep her body active, toned and trim. The country superstar even has her own line of fitness apparel called Calia by Carrie Underwood, and gave fans inspiration to hit the gym while looking so cute in an ensemble from her brand. The 37-year-old could be seen in an Instagram and Twitter photo on July 27 wearing no makeup, except for a light layer of lip gloss.