1 of 9
Celeb Nerds Who Turned Hot
![Celeb Nerds Who Turned Hot](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-then-and-now-intro-slide-1.jpg?w=680)
2 of 9
Patrick Dempsey
![Patrick Dempsey](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-2-1.jpg?w=680)
3 of 9
Sarah Jessica Parker
![Sarah Jessica Parker](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-3-1.jpg?w=680)
4 of 9
Robert Downey Jr.
![Robert Downey Jr.](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-4.jpg?w=680)
5 of 9
Ariana Grande
![Ariana Grande](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-5.jpg?w=680)
6 of 9
Ariel Winter
![Ariel Winter](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-6.jpg?w=680)
7 of 9
Joseph Gordon-Levitt
![Joseph Gordon-Levitt](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-7.jpg?w=680)
8 of 9
Chris Pratt
![Chris Pratt](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-8.jpg?w=680)
9 of 9
Matthew Lewis
![Matthew Lewis](http://develop.hollywoodlife.com/wp-content/uploads/2020/05/celeb-nerds-9.jpg?w=680)