Dalton Gomez

Ariana Grande is a married woman, because TMZ has learned she tied the knot this weekend. Sources with direct knowledge tell TMZ ... the wedding went down at her home in Montecito ... which you might also know as Oprah country. We're told there were less than 20 guests, including family members…

Ariana's mom, Joan, has given her seal of approval on her daughter's latest engagement -- saying ... "I am so excited to welcome Dalton Gomez into our family! Ariana, I love you and Dalton so much!!!! Here’s to happily ever after! YAY! xoxoxo" Ariana Grande is ready to say "I do" again -- this…