Please don't misunderstand - it looks perfect on you, and I get the strong feeling you want to keep it. And I don't know the whole history of you + leather or you + poly linings, so my opinion isn't worth much. *laughing at self*
BUT... I see a number of comments about those two things, and I have a vague recollection that you were trying to stop accumulating for a bit, and I always need help with my accountability when I'm trying to stop adding to my wardrobe - I can rationalise ANYTHING to myself, if I wanna. But that's not helpful for me or my goals. Feel free to tell me to hush - I won't take it personally at all. It's a hard balance, I suspect, for many of us: the urge to minimise against the "but it's PRETTY! And I WANTS it, Precious!"