The singer, 35, and Stranger Things actor, 45, have been dating since last summer, and Allen has been pictured wearing a diamond engagement ring since April.Now it appears they may have taken the next step in their relationship, marrying in a small ceremony led by an Elvis impersonator, according to The Sun.The couple obtained their wedding licence, which is part of public records, on Monday 7 September, as reported by US entertainment website TMZ.Allen appears to have used her previous married name - Lily Cooper - for the registration.This led to some early reports that the couple had applied for the licence, but not yet completed the ceremony.The small event is listed as having taken place at the Graceland Wedding Chapel in Las Vegas.
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