TENNESSEE: Megan Fox never tips less than $20. The ‘Transformers’ actress - who is currently pregnant with her second child with husband Brian Austin Green - always carries cash in her purse and leaves big tips because she has worked in the service industry herself and knows how hard it can be. She told Us Weekly magazine: ‘’I always bring cash for tips, and I never give less than $20. I used to work in a smoothie shop, so I know the value of a tip.’’ Megan, 27, always keeps other things to hand in her bag, including pens and a book to read.–BBC