Mariah Carey, Chrissy Teigen, Eva Longoria and more took to Instagram to share pics of their at-home holiday celebrations. As Carey revealed, she started a new holiday tradition with her 9-year-old twins, Moroccan and Monroe. «Sitting with Dem Kids by the tree, getting ready to read 'A Snow Globe of Joy' from my memoir together… Starting a new holiday tradition for us.♥️