Billy Baldwin mercilessly MOCKS wife Chynna Phillips's 'luxury life' - before she shares video of herself FLIRTING with a 'very handsome' stranger while at a book signing WITH her husband

Billy, 61, called out his wife, Chynna, for boasting about her lavish lifestyle as she prepared to reunite with Wendy and Carnie Wilson to bust out a tune at their close pal's book signing.