Gwen Stefani and Blake Shelton are hitched — tying the knot in a private ceremony this weekend in Oklahoma … and TMZ’s got one of the first shots of the bride in her dress, as well as what appears to be their first dance! The longtime ‘Voice’ couple said “I do” Saturday during an intimate gathering at Blake’s OK ranch, where he’s said to have built a chapel just for this occasion. Unclear just how many people were in attendance … but it appears to have been a pretty small guest list.