You might know Yara Shahidi as an actor, activist, fashionista, Harvard University student, and all-around goofball.

But she also prides herself on one other thing: being a great big sister. Yara is the oldest of three and she adores her little brothers, Sayeed (16) and Ehsan (11).
Seriously, how cute are they?!
So, when Sayeed needed help putting together the perfect promposal, it's no surprise he called on his sister to make it happen.
Yara shared this adorable photo of Sayeed and his prom date, actor Storm Reid, with the sweet promposal he put together.
In the photo, you can see Sayeed and Storm holding up the hand-painted promposal sign that reads, "S and S. Storms are rare in LA. I'm lucky I found one. Prom?" It also features two candid photos of them together.
"After big sister FaceTime consultations, conversations with his homies and knowing what would make her smile, Sayeed SURPRISED Storm with the CUTEST promposal," captioned Yara.