Query to return table sizes

I've been accessing Cache tables from a developer/reporting side, but am now involved in a project to create a data warehouse for our application.  I'm trying to find a query I can use to return the sizes of all the tables in the database, so we can identify the largest tables and handle those individually.  Can someone give me a query I can run against our Cache database to return the sizes of all the tables from largest to smallest?  

Thanks for the help