Taylor Swift Wishes Model Lily Donaldson Happy Birthday With a Curious Selfie

Taylor Swift performs in 2016
John Shearer/LP5/Getty Images for TAS

Taylor Swift performs onstage during the Formula 1 USGP on Oct. 22, 2016 in Austin, Texas.

But what's on her face and why?

Taylor Swift wished her friend British model Lily Donaldson a happy birthday on Friday (Jan. 27), sharing a selfie that'll have you asking some questions: Namely, what's on her face?

The black and white photo Swift posted to Instagram shows the now 30-year-old Donaldson covered in what looks like face paint. But without context, the reason behind the model's makeup is unclear. 

"I love you," Swift wrote. "Happy Birthday!"

Swift isn't Donaldson's only link to music; Fleetwood Mac legend Mick Fleetwood is her great-uncle.

See it here:


I love you @lilydonaldson!!! Happy Birthday! --------?

A photo posted by Taylor Swift (@taylorswift) on