Denim on denim...you either love it or don't. As with any look, there are so many variables to making something like this work for me. I first noticed it reappearing several seasons ago, but honestly haven't given it a go until now.
I rarely buy fashion magazines (apart from subscribing to Lucky), but for some reason when I travel, I do. I picked up the latest Glamour (with Heidi on the cover) and found myself dog-earing multiple pages, including several denim on denim looks.
I adore Heidi's look, but mostly her shoes. But this isn't about shoes...just don't not look at them. 8)
I have several "rules" when it comes to denim on denim. Nothing set in stone, but guidelines to check back with if something just doesn't look right.
1. I prefer denim in higher contrasting shades such as this lighter top with super dark wash jeans. Keeps it a little more current.
2. Pops of color are a must whether it's lip color, nail polish, or a bright handbag. Again, it keeps it from looking dated.
3. Fit, fit, fit. Everything should fit really well, and in general I prefer volume + fitted shapes together. The more fitted the top, the wider the leg on the jeans. Skinny jeans would go well with a looser denim or chambray.