Their selection and participation in the contest was put into jeopardy soon after the announcement, though, after Maarja Kivi left the group due to becoming pregnant with her first child. Her replacement was Triinu Kivilaan, who at the time was only 15 years old. Their participation was put into doubt due to regulations stating that competitors must be at least 16 years old, a rule introduced to eliminate participants such as the 13-year-old 1986 Eurovision winner Sandra Kim. Kivilaan had in fact initially claimed to be 17 years old, but the Swiss selectors doubted this and eventually found out her true birth date was January 13, 1989.