Gwen Stefani and Blake Shelton have a reached another monumental milestone in their relationship and they couldn't wait to share the fun update with fans.The No Doubt singer took to Instagram with a television clip and what it revealed sent her giddy. MORE: Gwen Stefani twins with older brother Eric in family photo you'll want to see The video was from the game show Wheel of Fortune and the clue was 'husband and wife'. WATCH: Gwen Stefani beams with happiness in newly released wedding