Well, no wonder Kourtney Kardashian doesn’t need a nanny! Aunt Kim has been doing a lot of babysitting, presumably for free. This week she took nephew Mason Disick shopping, and now for a little beach day. Well, actually, they are filming the Kourtney and Khloe Take Miami reality show. What do you think Mason’s fee is per episode? More photos after the jump, including a close-up of baby Mason that shows he’s definitely more mom Kourtney than dad Scott Disick.