The 24-year-old star was keen for everyone to see exactly what Matthew Lewis looks like nowadays – and it's worlds away from his Harry Potter character Neville Longbottom.
Matthew, 25, is all grown up now and according to many Twitter users, he has blossomed into a rather handsome young man.
Emma posted a photo of him dressed as a soldier in new BBC3 show Bluestone 42, and was full of praise for her former co-star.
“He looks very serious here but is hilarious in #Bluestone42. Watch @Mattdavelewis on @BBCthree [email protected] So Good!!” she wrote alongside the picture.
Emma sent her female fans into a frenzy when she tweeted this grown up photo of the actor
Matthew began trending on the social network site as plenty of women gushed over his good looks.
“Who'd have ever thought Neville Longbottom would get fitter than Harry Potter??!!” one user posted, while another wrote: “Still not over how well Neville Longbottom blossomed.”
Emma is clearly very fond of the actor – who starred alongside her and Daniel Radcliffe in all of the Harry Potter films.
Matthew plays Corporal Gordon “Towerblock” House in Bluestone 42, which is a comedy drama series about a British bomb disposal detachment in Afghanistan during Operation Herrick.
Matthew has certainly grown up since his days of playing Neville Longbottom
“We try and play a bit of cricket in summer together, in August time, we do it for charity. It's Gryffindor versus Slytherin, I was on Gryffindor obviously, I think we're winning like 3-1 or 4-1, we usually win,” he said.
Matthew went on to admit he and the rest of the cast developed very close friendships while making the movies based on J.K. Rowling's book series.
“I got the role at ten, we started filming when I was 11 and at the last premiere I was 21, so it was about ten years of my life,” he explained.
“I've been so fortunate being involved in a project like that. I was a huge fan of the books and then to work with the acting talent on those movies was a real privilege for me.”