brat pack, n. — Green’s Dictionary of Slang

brat pack n.

[on pattern of the Hollywood’s Holmby Hills Rat Pack, a coterie of film stars and singers led by Humphrey Bogart in the 1950s and boosted by the mid-1980s brat pack of youthful Hollywood up-and-comers]

any selection of successful young hopefuls, novelists, chefs, black success stories (black pack) etc; also attrib.

1985		D. Blum in New York 10 June 42/1: This is the Hollywood ‘Brat Pack’. It is to the 1980s what the Rat Pack was to the 1960s – a roving band of famous young stars on the prowl for parties, women, and a good time .
1990		J. Wambaugh Golden Orange (1991) 54: Went to the movies [...] Tedious. Brat-pack stuff.
1999		Observer Mag. 22 Aug. 9: This time there’s no pretensions of Brat Pack cool among the characters.
2000		Guardian 15 Dec. 14/1: In 1985 New York Magazine coined the words ‘Brat Pack’.
2010		Palladium-Item (Richmond, IN) 2 Feb. 10/1: Revisiting the Brat pack. New book explores the influences of films [...] and teen stars of the 80s.