BAE X 2.
Hello Giggles reports that although the pair have been officially dating for a while, it's their first time on the red carpet together.
Maisie captioned her Instagram pic an adorable, "JESUS CHRIST, look at that DIAMOND on my arm 😵 Looking sharp in his @joshuakanebespoke suit."
The two make very rare public appearances together, so it seems like a HUGE step for Maisie.
In 2016, Maisie told British InStyle that she was dating her current boyfriend (who was at the time, unknown) that she had met at school for over a year, but she didn't show his face on social media until this February.
Ollie shared his own picture on Thursday of he and Maisie getting ready for the huge event, captioned, "What can I say. I like the way you're put together."