Seeing double: Man meets identical twin stranger on Ryanair

Back when I was wee teenager, my mom & I had gone to Walmart late one night to grab some things. We noticed my sister-in-law going through a check-out line and figured since she worked nights at a nursing home but wasn't in her scrubs, perhaps she was going home sick & picking up some meds or something there.
We called her name a few times, to no response, so we followed her out the door to say hello real quick. She got in her car & pulled out of there before we could say anything. The next day, my mom called them to see if she was ok, because we figured she must have been feeling really cruddy to not acknowledge someone (not like her at all no matter how sick) Come to find out not only was it absolutely not her, she was clocked in at work the whole time. This woman was a total doppelganger, from appearance right down to the white Corolla she left in o.O

Over the years, she'd have people calling her asking what they did to offend her in XYZ store so bad that she ignored them, etc. It became a creepy recurring thing for her for friends to run across what they called her ice princess doppelganger, though she never ran in to the woman herself.

I've never heard that anyone has ever seen anyone who looks like me, but a couple of friends have commented that they have been told that their doppelgangers have been seen before.

It turns out that Leonardo DiCaprio has a doppelganger of '90's Leo working as a bartender in Sweden. Leonardo's doppelganger This kid doesn't just have a slight resemblance. It's like someone jumped in a time machine and brought Leo from the 90's back to 2015.