A popular American actor Chris Sullivan showed amazing weight loss transformation to his fans

He got most of his popularity from "This Is Us" which is why fans call him This is Us Star

Let's check what the actor does for his surprising weight loss transformation

Chris Sullivan was not as fat as he was seen on This Is Us first three seasons

It was revealed later that Sullivan use a fat suit to look obese for that role

However, this revelation upset the fans of 'This Is Us" as it was not portrayed by a fat actor

The show storyline was such that Sullivan has no way left and has to wear that fatsuit

In that show, the character Toby was played by Sullivan and Toby got divorced after

As a result of divorce Toby gained too much weight and to best perform that role Sullivan wore the fatsuit