Skye runs a hairdressing salon as a sole trader. In the 2020 income tax year, she had an annual turnover of $50,000. However, she has currently expanded her market, and expects her turnover for the 2021 income tax year to be $80,000. Is Skye required to register for GST? With reference to legislation, briefly explain why or why not, and, if she is required to register, what she needs to do to register.