C . B9 J3 k2 x* A3 C! U0 ?* f0 xto always kow about the most recent changes or developments in a particular situation or activity. \- E6 U% f$ C- L5 ]1 F# ie.g.5 m" T [$ w8 _: @# @4 q$ ^' j( f6 n
people with their finger on the pulse of fashion and pop culture.