You've probably seen the e-cards that you can personalize with a celebrity singing your name, right?
I got one last birthday from Donny Osmond. And so did Jennifer Garner.
And that was huge, because Donny was her childhood crush.
But then, he showed up behind her, in real life, with a "13 Going On 50" cake, and spent an hour and a half singing and laughing with her.
She shared it all on Instagram!