soak (one) to the skin
To make someone extremely or completely wet, especially through their clothing. Jane soaked the other kids to the skin with the garden hose. I hope they get home soon, or that rain is going to soak them to the skin!
soak someone to the skin
[for water, rain, or other liquid] to work its way through someone's clothing to the skin. The storm soaked us all to the skin. she soaked herself to the skin in the storm.