Chrissy Teigen br Celebrates Mom’s br U.S. Citizenship The model took to Twitter and showed off her Thailand-native mom, Vilailuck Teigen, as a new American Citizen. Teigen shared a video of her daughter Luna and her mom reciting the Pledge br of Allegiance. Teigen’s mom br looked thrilled. Luna was patriotic while br holding an American Flag. Teigen’s caption was simple, yet br effective in showcasing her br excitement for the big moment. Chrissy Teigen, via Twitter John Legend also celebrated his mother-in-law and even bragged a little.