Girl group Girl's Day's members Sojin and Hyeri, who were chosen as promotion representatives of Plan Korea, revealed a picture of themselves with donation bracelets on.

Yesterday, Sojin posted on her Twitter, "I think today will be our most proud schedule since our debut. We'll feel so proud of ourselves when we return from Thailand next week. Thank you for today. Go Plan Korea. FlyFly~" along with a picture.

In the picture, Sojin and Hyeri are making a heart with their arms, revealing the donation bracelets on their wrists.

Girl's Day will be going on a volunteer trip to Thailand for girls who are suffering from poverty with Plan Korea on August 27.

Internet users who saw this commented, "Their hearts are just as pretty as their faces," "I'm proud of them too," and "It's good to see that they would make time for volunteering even in busy schedules."

Photo Credit: Sojin Twitter