The 'Blank Space' hitmaker shared a photo of the group enjoying tea and champagne together.
In the photo, Swift, 25, was seen hugging Gomez while Ellie sat next to them holding a glass of champagne
"We are at our best when we cheer each other on and build each other up. Happy International Women's Day," the 'Shake It Off' songstress captioned it.
Gomez posted two photos from the outing.
The first photo showed her sitting on a wooden couch while Swift, who wore a white fur jacket, lied with her feet on the air.