"The trick is to wear a t-shirt two sizes too small," he joked in the caption, as followers flooded the comments with amazement and unease at the transformation. Some viewers celebrated the change.

This is a repost of my number 1 video of all time and now’s your chance to hear a little bit more about the story and this ...

OK! can reveal Ryan Seacrest has ignited a fresh wave of concern among fans and friends after showcasing a dramatically muscular physique online – prompting claims his relentless training schedule is ...