Just last month, Nicole Richie and Joel Madden celebrated their daughter’s very first birthday. (Harlow Winter Kate Madden was born on January 11.) Now the parents are preparing for their latest addition.

Late yesterday, the 29-year-old Good Charlotte musician announced the happy news through his band’s website:

What’s better than winning an Oscar? I am so happy to tell everyone that Harlow is going to be a big sister! God has truly blessed my family. Hope your all feeling as good as i am right now…......

Richie, 27, and Madden have been together since late 2006. Although the two have talked about marriage, no wedding date has ever been announced.