Song with british or female singer

guys i can't for the life of me find this artist or song

the song is with a female singer, sounds British, or austrailian accent, the song sounds really happy and like it should be in a musical play or something,

it seems like it is a new song, but its definetly not pop, its seems like from a musical or a play its a cute one i think its on the radio lately. idk its an odd song but addicting