Twilight star Nikki Reed is making her separation from estranged husband Paul McDonald official, filing for divorce this week after the couple split in March. The actress cited irreconcilable differences.

Both Reed and her American Idol-alum partner are 29 and it was the first marriage for both. The pair married just months after meeting at the Little Red Riding Hood premiere in 2011.

The divorce won't stop the couple from finishing their debut album together ... a spokesperson for the pair released a statement in March, saying: "After much consideration, Nikki Reed and Paul McDonald are ending their marriage. They will continue to share their love of music, and are still working on their debut album, I'm Not Falling, releasing in 2014."

Good luck with that! Wonder if they'll tour together?