Hayley Kiyoko Sings 'Pretty Girl' to Becca Tilley at London Concert

Hayley Kiyoko serenaded her girlfriend Becca Tilley with "Pretty Girl" during her concert at London's Koko on Sunday night (April 10).

Grape Therapy: Becca Tilley & Hayley Kiyoko Are Here! (& Queer)

Go Behind-the-Scenes of Hayley Kiyoko's 'For the Girls' Music Video

Becca Tilley and Hayley Kiyoko dress as Velma and Daphne for Halloween

I love Becca Tilley & Hayley Kiyoko so much!! #hayleykiyoko #beccatill

Hayley Kiyoko teases headline tour dates on her Twitter

Hayley Kiyoko & Bachelor Nation's Becca Tilley CONFIRM Romance

Becca Tilley Says Weight's Been Lifted After Going Public With Hayley Kiyoko Relationship (Exclusive)

Hayley Kiyoko and Becca Tilley pose hand-in-hand as a stylish couple at Babylon premiere in LA

Becca Tilley's Girlfriend Hayley Kiyoko Brings Her Onstage at Concert: 'Adding This to My Core Memory List

Who Is Hayley Kiyoko? Age, Net Worth, Girlfriend And Link With Taylor Swift

Hayley Kiyoko and Bachelor Alum Becca Tilley Kiss at Party

Hayley Kiyoko on Becca Tilley Music Video, New Album 'Panorama' & Fans