Gwen Stefani has filed for divorce from Gavin Rossdale after 13 years of marriage.

Gwen, who is represented by attorney Scott Weston, cited irreconcilable differences in her divorce petition and asked for joint custody of the couple's three kids, Kingston, 9, Zuma, 6, and Apollo, 1. Interestingly enough, Gwen is also denying Gavin spousal support. Gavin filed his response at the same time, and he's also asking for joint custody. The singer is being repped by Laura Wasser.

The couple had no prenup, according to sources for TMZ, which means they will likely have to divide their assets down the middle unless they reach a different agreement. Gwen is worth an estimated $80 million while Gavin's net worth is somewhere around $35 million.

Ben and Jen we get, but who saw THIS one coming?!