Renee Zellweger won't skip a tip

Such a sweetie, that Renee Zellweger, who's been staying in Philly with actor-beau Bradley Cooper while he shoots The Dark Fields.

He was hungry one recent afternoon. She walked into SLiCE, the pizzeria at 1740 Sansom St., a cannoli’s throw from the high-rise apartment they’re sharing.

Zellweger got a prosciutto-topped pizza and an arugula salad to go.

On a second visit, Zellweger wanted delivery and Cooper's assistant paid the bill with the actor's black Amex card. The shop's cashier -- pressed into delivery service at the last minute -- got to the lobby with the food, but the doorman directed her to leave it with him. 

When Zellweger realized that no tip had been accommodated, she ran down to the restaurant to hand-deliver cash to the cashier.