The most recent episode of 'Weekly Idol' featured AOA as guests, and MCs Jung Hyung Don and Defconn made the girls battle for the title of thinnest 'ant waist' previously held by KARA's Hara. 

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When the hosts asked who in the group boasted the teeniest waist size, Jimin and Mina were vouched as the representatives for the title of 'ant waist' among the members. A measuring tape was brought out to prove their claims. As it turns out, the two girls weren't exaggerating after all. Jimin's waist was measured to be a meager 19.5 inches, while Mina recorded an even smaller size at 17.9 inches, barely achieved by holding her breath. 

With this small feat, Mina has surpassed even Hara, who is known for her slight frame and tiny waist, taking over the 'Weekly Idol's Hall of Fame as the idol with the thinnest 'ant waist.' 

Check out AOA's segment above!