The 29-year-old singer, the runner-up on the last series of U.K. talent show The X Factor, initially got engaged to partner Meri Sopanen last August (16). But she decided to mark the change in Finland's law by making her engagement official, and popping the question to Meri on social media.

"Same sex marriage is legal in Finland today!!! Would you marry me @MeriSopanen?" she wrote.

Her proposal comes after Saara told Star magazine last year that she was hoping to walk down the aisle in 2018, and is already thinking of venues for her big day.

"Our date will hopefully be in 2018,” she said. "I’d like to get married somewhere warm. In Finland and the UK you can’t predict the weather. We want it to be sunny. Something small and intimate because my work is so public. That would be good for me, but my partner wants to have a big wedding."

Sharon Osbourne is also expected to be one of the guests, after Saara said she would love to invite her former X Factor mentor to celebrate her nuptials.