Diary of a wimpy kid the ugly truth is a 2010 bestselling childrens fiction book by american author and cartoonist jeff kinney and is the fifth book in the diary of a wimpy kid series the ugly truth sold 548000 copies in its initial week of publication edging out decision points which sold 437000 copies kinney initially struggled with the decision of whether greg would be a non aging . Diary of a wimpy kid the ugly truth is the 5th book of the diary of a wimpy kid series the . Diary of a wimpy kid the ugly truth book 5 dive into jeff kinneys fifth instalment of his rib tickling and bestselling diary of a wimpy kid series. Diary of a wimpy kid paperback the one where greg gets the talk the fifth laugh out loud fully illustrated diary of a wimpy kid book from 1