Yes it's the blonde one from Abba.
Maybe you didn't know, but in May 2004, Fältskog released My Colouring Book. The album was well received by critics and was a best-seller in Scandinavia also reaching number 12 in the UK Albums Chart. In Germany the album got to number six in the charts and in Holland it reached the top 10. The album sold over 500,000 copies worldwide.
Agnetha Fältskog - If I Thought You'd Ever Change