Would someone please explain this weird clue and answer?

[bed_of_dandelion]

Looking down the list of previous finds I find

Clue:
Elaine, George & Jerry

Listing:
MEDIEVAL BROWN MONK COSTUME GOWN ADULT FRIAR TUCK L-XL

WTH?! I don't get it. What does sienfield have to do with a monk costume?

[cbg8r]

monk's was the name of the diner where they always ate. remember there only has to be a word or association to the clue, no direct link

[jbellx1]

the cafe they always hung out in is called Monk's

[bed_of_dandelion]

Oh, I see, I didn't know that. Ok how about the garfield one?

Greece antique print crete, I couldn't even find that listing.