United Kingdom, July 21 -- Marco Pierre White's son is set to become a dad for the first time.

The 64-year-old celebrity chef's son, restaurateur Luciano Pierre White, 33, and his 35-year-old fiancee, fashion designer Stephanie Beard, announced they are expecting their first baby together with a sweet Instagram upload on Monday (20.07.26).

Luciano and Stephanie's post included two black-and-white shots - a cosy one of the pair at a restaurant as they held a sonogram, and another of the duo in a car as she displayed her bump - and a picture of the beauty showing off her pregnant look on a beach.

The couple's followers flooded the post's comments section with congratulatory messages, as one penned: "Congratulations, Marco is going to be ...