Sofia Richie's family is expanding! The 27-year-old model took to Instagram on Thursday to announce she is expecting her second child with husband Elliot Grainge! Aww! Sofia posted a mirror selfie to share the happy news, in which she is lifting up her shirt to show off her baby bump. She captioned the pic: "On my way to launch these babies + @srgatelier" Related: Travis Kelce & Taylor Swift Get Baby 'Voodoo' From The Rock! FYI, that other baby she is launching is her own fashion line, SRG Atelier! Ch-ch-check out the pregnancy announcement (below): View this post on Instagram A post shared by...