Dan Stevens felt "weirdly emotional" watching 'Night at the Museum: Secret of the Tomb' following Robin Williams' death.

The former 'Downton Abbey' star appeared alongside the late actor - who hanged himself at his home in August aged 63 - as Sir Lancelot in the comedy film and admitted he found it tough to hold back the tears while watching the 'Mrs. Doubtfire' actor in the motion picture because he loved acting with him.

Dan Stevens struggled to hold back the tears while watching late co-star Robin Williams on 'Night at the Museum: Secret of the Tomb'.

He said: "Personally, I feel I have no right to say it but it did hit me hard because it was one of the highlights of my life getting to meet him and work with him.

"It was weirdly emotional watching the film back. The ending of the film had this sadness about it, saying goodbye to beloved friends and moving on.

"I remember when they shot that farewell sequence between Ben [Stiller] and Robin, it was an emotional day because it was the end of nine years working together, so there was something in the air that day that was very sad, and obviously it's been multiplied infinitely by this year."

Dan admitted Robin - who played a wax statue of former US President Theodore Roosevelt in the movie - was "great fun" on the set of the motion picture and often used to whisper sneaky suggestions to the 32-year-old star about how he could try to play his character in certain scenes.

Speaking to The Huffington Post UK, he added: "The generosity that he showed, and the support and encouragement for me, who hadn't done a lot of comedy before, just to be right there alongside you, championing any effort to be funny.

"He was a great fun of laughter in general, and hearing him whisper in some scenes, 'Why don't you try this?' was just a great privilege.

"So I did spend a good amount of the first half of this year with him, and it was going from that extraordinary high to an unbelievable low. It's wonderful seeing him up there on the screen, and it was a great send-off."

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