It's been just over a week since Tom and Giovanna Fletcher welcomed the newest addition to their picture-perfect (or vlog-perfect), and we already have a first picture.

After teasing fans with news of little Buddy's birth by tweeting the words "Player 2 has entered the game" last Tuesday, McFly singer Tom kept things simple with the first official baby photo too, choosing only to share a snap of his new son's tiny feet.

"Can't believe these feet are a week old already. Happy 1st week in the world Buddy!" the proud dad wrote on Instagram last night.

We've also had a glimpse of what appears to be Buddy's hand, in this picture posted last week with no caption, just two days after the couple welcomed their new arrival:

The couple are already parents to a two-year-old son, Buzz, who features regularly in Tom's adorable father-and-son vlogs.

Over the last couple of years, the videos have earned the Fletcher family something of a cult following, and indeed the couple used a vlog to announce their pregnancy back in September. 

The singer, who was diagnosed with bipolar disorder in 2010, recently explained that his outlook on life had changed over the last two years, largely thanks to becoming a dad.

"Having a kid has really helped me in my life. It gives you a sense of needing to be stable," he told The Mirror.