The 22-year-old, who is in a relationship with singer Andy Brown, also claimed that she is a "good girl" and was taught how to pout by her 'Ego' bandmates.
"I'm a good girl, I'm so fussy - I've only ever kissed three boys," she told the Daily Mail.
"I don't drink. In our early photoshoots I'm smiling and the other girls are pouting. I asked them how I can get that face and they went, 'Squint and stop smiling'."
King auditioned on The X Factor with girlband Fallen Angelz before joining The Saturdays in 2007.
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