Geordie Shore star Holly Hagan took to Instagram to share a sweet video of her baby son Alpha-Jax as he hit an adorable new milestone.The video showed Holly sitting on her living room floor holding Alpha-Jax as the mother-son duo laughed their hearts out together. Holly admitted that her “whole soul has melted” at the sound of her baby son as he let out some of his first laughs.The reality star penned: “His first proper chuckle! I swear my whole soul has melted and I’ve just stopped sobbing that is the best sound I’ve ever heard in my time on this earth!! “The love I have for my little human is indescribable.” Holly's bestie and fellow Geordie Shore star Charlotte Crosby commented that the clip was her “ fave video in the world,” and Love Island star and fellow mum, Shaughna Phillips agreed, writing: “The best sound EVER.” Fans also couldn’t get enough of the adorable baby laugh as one commented: “This melts my heart”, while another said: “Love to hear babies laugh so cute”.