Spent all of yesterday at the amazing Versailles palace, about 45 minutes out of Paris. Mike's Travel Guide easy to follow and incredibly detailed guide of getting there. The only thing I would add is how to find out which platform to get on when you're at the RER station, which can be easily solved by asking at the information counter. And they're more than happy to help you if you greet them in French!
Definitely a recommended place to visit when you're in France, however be prepared walk heaps as the palace and surrounding garden is massive! Comfortable sneakers are highly recommended.
Outfit details:
Sportsgirl striped top
Lilya overalls (dropping online soon)
Adidas Stan Smiths via ASOS
Nike socks
Dolce & Gabbana sunglasses via Sunglass Hut (similar: via Macy's )
Click to shop sneakers and denim pinafores:

Photos by myself and Helena Wang