However, the support for his sweetheart didn't stop there, as Slater also posted a picture of the two-time Grammy Award winner on his main feed. The snap, taken from behind, features Grande holding multiple pink balloons – Glinda's signature color – while wearing an oversized sweater and looking out the window.

Ethan Slater shared a rare photo of girlfriend and 'Wicked' costar Ariana Grande with pink balloons following her Best Supporting Actress Oscar nomination

Ethan Slater is marking Ariana Grande 's first Oscar nomination with a sweet tribute. Shortly after the announcement on Thursday, the actor shared a photo of his "Wicked" co-star on Instagram. The image captures Grande from behind, standing on a balcony with pink balloons in hand, gazing out a window.