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In page Sister2Sister:

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At the ages of 9 and 13, Christine and Sharon joined Brent Street Studios to also study dancing. Soon after joining the school, the girls were invited to join the Brent St. Kids performance troupe and began singing and dancing all over Sydney. It was through this exposure that they attracted the attention of Tina Arena who saw their performance at the Variety Club Heart Awards. Arena mentioned the girls to her now former manager/husband. He later signed them to his management company and new record label in 1997.[citation needed]