Sandra Bullock: Good Genes or Good Docs?!

Try not to be blindsided by Sandra Bullock’s beauty!

Here’s a 31-year-old version of the "While You Were Sleeping" star at an event in L.A. back in 1995 (left) and 21 years later ... the Oscar-winning actress -- who’s currently filming "Ocean’s Eight" -- on set earlier this week (right).

Miss Congeniality!

The question is ...