What To Bring
Clothes - To stay warm, wear lots of thin layers (one thick layer is not a good idea) and avoid cotton (which is not breathable).
While you are heading for the snow, don't forget your swimming costume which you will need for your chalet's ski detox facilities (sports shorts and t-shirts cannot be worn in hot tubs). You will each be given towels, slippers and a bathrobe when you arrive.
As you will not be able to wear shoes in your chalet (melting snow can be hazardous and uncomfortable to walk on), you might want to pack your own pair of slippers or indoor shoes, though all adults will be given a pair of light slippers on arrival.
Health & safety - As the sun can be very strong, please pack sunglasses & goggles (both should have sufficient UV protection), and also make sure to pack high factor sun cream and lip salve.
While your chalet will have a first aid kit, please also pack any medication that you need as it may not be available in resort.
Other - Perhaps a backpack (for your days on the mountain), international adaptor, and a hip flask/water bottle (yin & yang!).
padded ski gloves or mittens
waterproof/windproof padded jacket
ski pants/ salopettes
long ski socks
ski goggles or sun glasses with UV protection
thermal undergarments (long johns and vest) can also be a good idea