With which hit song did Aqua have their international breakthrough?

Explanation

Aqua is a Danish-Norwegian dance/pop band formed in 1994. The band is composed of Norwegian lead singer Lene Nystrøm, and the three Danish members René Dif (rap), Claus Norréen (guitarist) and Søren Rasted (keyboard). Originally, the band had been called Joyspeed, and released the single "Itzy Bitzy Spider". They were successful with "Roses Are Red" in 1996 and broke through internationally the following year with the hit song "Barbie Girl". The bank broke up in 2001 and reformed in 2007.