Top panel: Mean charged particle multiplicity in the leading charged jet as a function of jet $p_{\rm T}$ compared to MC models for pp collisions at $\sqrt{s}$ = 7 TeV for various jet resolution parameters ($R$ = 0.6 (top), $R$ = 0.4 (middle) and $R$ = 0.2 (bottom)). UE contributions are subtracted from both data and MC. Bottom panel: Ratios MC/data. Shaded bands show the quadratic sum of statistical and systematic uncertainties on the data drawn at unity.