The couple, who have been an item almost two years, took to social media to reveal they were now the doting parents of a beautiful little boy.
Billi, who announced she was pregnant with an incredibly festive Instagram posting, gave fans and followers an insight into her pregnancy journey as she edged ever nearer her due date.
The 26-year-old yogi paid tribute to her new arrival last night when she uploaded a tender black and white shot of the delighted new family, captioning the snap: "Welcome to the world our beautiful baby boy!"
In a similar vein, overjoyed dad, Andy, who has two children from previous relationships, took to Instagram to share his joy.
Uploading the same snap, the proud dad gushed: "Welcome to the world little AC. nine months of cooking and what a wonderful job you have done!"
Messages of support and congratulations have poured in for the popular couple since their big announcement, with one fan writing: "Congratulations babes. Wishing you all the happiness at this special time."
Billi's excitement was contagious in recent weeks as she eagerly anticipated the birth of her first child and uploaded numerous snaps of nurseries, luggage and pushchairs.
We couldn't be happier for her and look forward to the announcement of the name!
