The body measurements of female girl group idols that were always avoided have finally been revealed. During a recent recording of MBC's "Idol Star 7080 Best Singer", the idol singers were able to truthfully confess their body measurements and head sizes during the show's "Idol Guinness Dol.Dol.Dol" corner. 4minute's HyunA, who was always known to have one of the skinniest waists in the entertainment industry, was measured directly on set and confirmed her slim 23 inch ant-sized waist. Challenging her waist measurement was miss A's Fei, who marginally lost by 2 inches with 25 inches. Out of the male celebrity idols, F.T Island's Song Seung Hyun gave a measurement of 26 inches, shocking the set with an ant-sized waist comparable to that of females. In addition, the corner filmed battles between�T-ara's Jiyeon, SISTAR's Hyorin, and MBLAQ's Thunder for the smallest sized head. The full episode will be aired this coming February 4th. Source: OSEN via Nate