Song title and artist

[Mr.Ultimate]

I'm trying to find out what a song is called. I think its quite recent and it has what sounds like ukelele in it and some whistling over the top.
In the chorus i think the lyrics go "sun, sun, sun something....." "fun, fun, fun something..." or something like that i cant quite hear it.
Anyone help?

[sara3]

https://www.youtube.com/watch?v=T8YCSJpF4g4

enjoy!

[Mr.Ultimate]

Thankyou!! Thats been annoying me all day!