The nation's little sister, IU has become the "human vitamin" for uncle fans. Several photos of IU during a photoshoot for a vitamin CF has surfaced online, melting the hearts of many.

IU has been selected as the new model for the Vitamin C supplement,�Lemona. The singer is seen�showing off her innocent beauty with her charms through the photoshoot.

Fans were mesmerized by her beauty and commented, "IU is so cute!", "She becomes prettier everyday", and "Time to go out and buy some Lemona."

The campaign CF for Lemona, "You and I Lemona", featuring IU will be released on May 1st.

Source & Image: Daily Economy via Naver