At the start of Season 1 in the very First episode of Outlander, Claire wears a white shift dress with a notched keyhole button V-neckline.
(Click photo above, or HERE for an almost exact replica of Claire's white shift dress!)
This is the dress she is wearing when she passes through the stones at Craigh Na Dun while looking for the forget-me-not flowers she had seen there the day before.
This V-neck dress conveniently turns into more of a 'shift' look when she loses her brown belt when running down the hill from the 'redcoats' who have been chasing the highlanders that she later meets during this 'misadventure'.
Thankfully she's wearing a good pair of leather shoes that stay on her feet well during her run through the woods and brambles on the muddy turf. The longer 3/4 length sleeves of her shift help to keep her somewhat warm, but Claire has unfortunately left her shawl wrap at the stones.
Not to worry though as Jamie will soon generously share his 'plaid' with her during the long ride back to Castle Leoch on horseback. (I'm sure his presence seated behind her also helps to keep her pretty warm too.)
The dresses below are very reminiscent of the one Claire wears to Craigh Na Dun in Episode 1, 'Sassenach'. The first one pictured is almost an exact replica with keyhole buttoned collar, long sleeves, and included 'skinny' belt.
The second dress pictured has a cloth self-tie sash belt that can be removed to accommodate a different belt, as can all of the dresses depicted here. (The next 2 pictured also have a similar retro silhouette & notched collar.)
Just click on one of the images below to see a larger image, & to find out how to get Claire's outfit for your very own. (For the belt Claire wears with this dress, please click HERE.)
For more dresses that look like the shift Claire wears after passing through the stones, please click HERE. For the shoes click HERE; and for her shawl, click HERE.)