I often use the phrase ''you feel made up'' or ''all made up'' when someone feels really happy or pleased about the outcome of something or how things have gone. Where does the meaning for this come from?
The OED unfortunately does not tell us, though in its entry for "made-up":
a. Irish English and Brit. regional (esp. Liverpool). Surprised and delighted; very pleased, thrilled.
b. Irish English (regional). Of a person: assured of success or happiness; lucky, set-up (cf. made adj. 6a).
we find a reference to made", meaning 6a, which is:
a. Of a person: having his or her success in life (happiness, etc.) assured. Chiefly in a made man .
It's a Briticism. Here's an article from the UK sports-oriented online magazine The Shuttle, titled Pete's delight... (Pete's a fan of the football team who've just named him "honorary 12th man")
The context accords with my understanding that it's primarily part of the vernacular of sportsmen and fans, but I don't think it's uncommon among young people in general. It's pretty much the equivalent of "I'm feeling over the moon".
Purely guessing here, it may come from the bright buzzy feeling a young lady has when she's dressed to the nines, wearing full make-up, out for a night on the town. It may be a variant on to feel puffed up (with pride), but although "pride" is obviously a factor above, it isn't always.
“(All) made up” has several common meanings:
It would be pretty easy for the “cosmetics” meaning to be reused as a metaphor for a feeling of satisfaction. The others, not so much.