The mother of influencer Nash Grier's wife, Taylor Giavasis, has been reported missing. Taylor, 28, shared a missing person's report for her mom, Nikki Giavasis, via her social media pages on Wednesday, August 20. " MISSING PERSON ," an Instagram caption read, claiming that Nikki was last seen on Monday, August 18. "Nikki's family is urgently seeking any information regarding her whereabouts. If you have seen Nikki or know anything about her location, please contact 911 immediately or call the Fort Lauderdale Police Department at (954) 828-5700.