A blazer instantly gives a little more sophistication to your look when paired with jeans and definitely shows that you made the effort to put some class into your style...and you're still comfy!
The silk blouse adds a nice touch to creating a more dressy look, especially when paired with some dark blue jeans. I would go with a darker jean if you're wanting to keep it looking more on the dressy side, but Eva still shows us that you can pull the light washed denim off with the right blouse.
**Your 30s are the perfect time to build a simple core wardrobe while also experimenting with trend-driven items. ~InStyle