Why does miley cyrus lies about her height?

everywhere she goes she says she"s 5'4 or 5'5' honeslty i think she's like 5'7 or 8 in photos with her mom they are the exact height. her back is always bent and she slouches and bends her kneew just look at her pics. (her mom is 5'8) next to demi lovato (who is 5'5 ) she looks way taller. She's such an idiot lyin about her height.. just admit your a effin tall crap..... and cmon even sarah jessica parker called her a VIKING.. and SJP is 5'3... im 5'5 and my friend who are friggin 5'2 dont think im a vikin