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Calvin Harris partied with his girlfriend Taylor Swift and her posse of gal pals on Tuesday, April 28. Calvin posted on Instagram a photo of Taylor's cats Meredith Grey and Olivia Benson cutely playing at her kitchen. He also shared a photo of Taylor's friends Ellie Goulding, Halston Sage and Alana Haim eating a cake together. He captioned both photos, "Moment."

Moment

A photo posted by Calvin Harris (@calvinharris) on Apr 29, 2015 at 12:41am PDT

Moment

A photo posted by Calvin Harris (@calvinharris) on Apr 28, 2015 at 11:56pm PDT

Taylor shared a group photo of her and her gal pals including Halston, Alana, Lorde and Serayah, possibly captured by Calvin. She captioned it, "Real love. @serayah @haimtheband @lordemusic @halstonsage."

Real love. @serayah @haimtheband @lordemusic @halstonsage

A photo posted by Taylor Swift (@taylorswift) on Apr 28, 2015 at 11:13pm PDT

Ellie, Serayah and Lorde also shared sweet sisterly pictures too. Ellie posted a photo of her, Serayah and Taylor in front of what appeared to be a bar along with caption, "Seray and sertay. 100% sober." Serayah posted a black-and-white photo of her, Taylor, Halston and HAIM sisters. Lorde, meanwhile, shared a polaroid photo of her, Taylor and Danielle Haim.

Seray and sertay. 100% sober

A photo posted by elliegoulding (@elliegoulding) on Apr 28, 2015 at 9:05pm PDT

Woes

A photo posted by Serayah (@serayah) on Apr 28, 2015 at 10:03pm PDT

reunited with the number 1s

A photo posted by Lorde (@lordemusic) on Apr 29, 2015 at 12:08am PDT