How to style a sleeveless jean jacket

It's spring fever. That is what the name of it is. And when you've got it, you want - oh, you don't quite know what it is you do want, but it just fairly makes your heart ache, you want it so! 

Outfit details:

accessories: Mango

shirt: Calliope

trouser: Roberto Cavalli

bag: Art Millano

shoe: FRH UK

sleeveless jean jacket: InCity 

“Spring is nature’s way of saying, “Let’s party!”