I think there is nothing more fun than a laid back and casual approach to your engagement session. I let my couples bring two outfit choices so this can be incorporated. Especially in the Colorado mountains for a carefree and outdoor, mountain couple, this is a great way to approach your session.
Ladies
There are many options for a casual look.
A summer dress, a jean jacket, cozy sweater, muslin pants, jeans...the list goes on! Layers are always recommended! If it is warm out, wear a summer dress that is carefree and you can do a little twirl in. If it is winter, bring a beanie! If it is spring/summer/fall bring along a hat! I have had many of you ask some online places to go shopping and where I recommend for clothes. See at the end of this write-up for my must go-to stores!
Guys
I love a good plaid on you! Nothing too wild and crazy. Usually the darker the pattern, the better.
If it feels too lumberman-ish then go for a nice button down. If you are in Colorado, I say embrace that! If it is cool out, bring a beanie! Put on a well fitted coat too. What photographs well are layers, and I love a look of plaid shirt with a sweater over it, and then a jacket on top. It looks sharp but still casual. And maybe ditch the casual Nike shoes, for some more formal leather shoes. It will add that final touch to your look.