I love corduroy jeans as well as vertical-striped jeans. Both are a fun switch from plain old denim. They can be slimming so long as the stripes aren't too chunky.
Tailored jackets with jeans is a great look for all ages. Dress up with a heel and pretty shirt, or just wear a smart T-shirt under the jacket.
Ballet pumps are the dream shoes because they are so comfortable. They look great both with jeans and summer dresses; and you can even wear the right pair with an evening gown.