Gwen Stefani, 51, and Blake Shelton, 44, could be married any day now! The superstar couple officially filed for a marriage license on Tuesday, June 29 in Blake’s home state of Oklahoma, HollywoodLife can confirm via document obtained from Johnston County Court Clerk. Once the license has been filed, couples have 10 days to legally tie the knot — meaning the latest Gwen and Blake could get married is Friday, July 9.