Based on the clue 'a posturing person whose ostentatious attire makes...', what is the answer?

Based on the clue 'a postage stamp featuring this blonde premiered on...', what is the answer? Based on the clue 'a poster shows the three stooges as members of the...', what is the answer? Based on the clue 'a postgraduate degree lithgows male offspring', what is the answer? What is referred to by 'a postponement of punishment'? Based on the clue 'a potato a winter apple with a rough brownish ski...', what is the answer? Based on the clue 'a potato crisp race car legend earnhardt', what is the answer? What is associated with: a potato famine during the 1840s caused this islands population to decline by about 2 million? Based on the clue 'a potent drink a powerful rifle a runner finishing...', what is the answer?