Tom Fletcher and his wife Giovanna documented her second pregnancy in an adorable video.

Tom and Giovanna Fletcher (c) YouTube/Tom Fletcher

Tom and Giovanna Fletcher (c) YouTube/Tom Fletcher

The McFly star has shared the two-minute timelapse clip of the pair, along with their first son, 23-month-old son Buzz, counting down the last six months until she gave birth to their second child, Buddy, who was born on February 16.

The video is shot in Buzz's room and starts off with Giovanna holding up a '3 months' sign, written on a heart-shaped chalk board, to the camera before standing next to the youngster's cot, in which he and dad Tom are standing.

As time goes on, Giovanna's baby bump gets even bigger and new signs appear with '5 months' and '6 months' on.

They celebrate Halloween by dressing up accordingly and do the same over the festive period, sporting Santa hats.

The clip culminates with Giovanna holding their newborn and Tom clutching Buzz as they celebrate their latest addition to the family.

The couple achieved the desired effect by taking pictures nearly every day of the brunette writer's pregnancy.

In a caption alongside the clip, they wrote: "We took photos almost every day of the pregnancy...again! Well, we did it for Buzz so how could we not do it for Buddy. We hope you enjoy watching it as much as we love looking back over the last 9 months of our lives that brought us our second son Buddy Bob Fletcher."

The couple - who married in 2012 - made a similar video for their first born Buzz.