Nah, not dated bikers are still in! I hope anyway, I have 4 leather and one suede. I'm 19 and wearing one today, not that I should have to in August!
Really the most important thing is if you like it and feel comfortable. I don't prescribe to what's in or not. Fashion and style should be personal. If you like it wear it, that's my moto anyway.
Does look a tad loose (you don't look a size 14 though either, you have lovely slim legs) but think it will go really nice with autumnal coloured jumpers under as it gets cooler.
Never bothers me if it's faux leather either, although my real leather are the most lush in sense of how they fall and feel, but for colours I wouldn't wear as often real leathers not worth the price label.