"It’s been incredible. We are so obsessed with him. He’s just decked out in merch – actually when we found out about him, Peter and I actually spoke to our merch team to see if we could get little babygrows with our logo on them and hats and honestly anything we could get our hands on, we got it for Harry. He even has his own personalised noise-cancelling headphones." Sirius gushes on proudly.