As Wimpy turns 70, we look back at some of the most famous faces who love the chain – including Lulu, Paddy McGuinness, Stacey Solomon and TOWIE sisters Billie and Sam Faiers – with even Brad Pitt popping into the the Billericay branch while filming World War ZAs Wimpy turns 70, we look back at some of the most famous faces who love the chain – including Lulu, Paddy McGuinness, Stacey Solomon and TOWIE sisters Billie and Sam Faiers – with even Brad Pitt popping into the the Billericay branch while filming World War Z