Young Sheldon’s Iain Armitage Meets Montana Jordan’s Baby With a ‘Big Bang’ Twist!

Iain Armitage meets ‘Young Sheldon’ on-screen brother Montana Jordan’s baby, Emma Rae, while paying homage to ‘The Big Bang Theory.’ In a clip on Instagram, the actor sings ‘Soft Kitty’ to the newborn, a recurring ‘Big Bang Theory’ song that was first introduced by Sheldon when he asked Penny to sing it to him while he was sick.