Credit: Randy Holmes/ABC Television Group © 2011 Disney Photo: Cristina, Meredith, and Zola on the Grey's Anatomy Season 8 Premiere on September 22, 2011

Somebody’s getting ready to blow out the candles on Grey’s Anatomy in an upcoming episode! And chances are, it’s totally not who you’d think.

A fan spotted some of our Grey’s favorites — including Jessica Capshaw (Arizona Robbins), Ellen Pompeo (Meredith Grey), Sara Ramirez (Callie Torres) and Sandra Oh (Cristina Yang) — filming a scene on location that looks a lot like a child’s birthday party happening in a park. And according to SpoilerTV, Episode 17 is when it’s all going down. Check out the fan’s photo below!

Wanna know something else interesting about Episode 17? David Greenspan, a director and editor on the show, recently let it slip that there will be some “What-If” scenarios, including Cristina and Owen (Kevin McKidd) — and it may or may not be related to Cristina’s exit from the show at the end of this season.

So now we’ve got some thinking to do. The obvious kids who could be celebrating a birthday? Zola, Derek Bailey Jr., and Sofia. We know that an older version of Zola was recently cast, so could this episode be the reason?

But if it’s one of the “What-If” scenes, the possibilities are endless. We’ve got a feeling that, since we’re expecting Episode 17 to surround Crowen, we could be seeing a birthday party for the Yang/Hunt baby that never was… how surreal would that be?

Whose birthday do you think it is in the photo? Let us know below!

Source: SpoilerTV, Twitter

Credit: Twitter