The ornamental design for an integratedilluminationapparel, as shown and described.
FIG. 1 is a front view of an integrated illumination apparel showing my new design;
FIG. 2 is a rear view thereof;
FIG. 3 is a left side view thereof; and,
FIG. 4 is a right side view thereof.
The broken lines showing throughout the figures are included for the purpose of showing environmental structure and form no part of the claimed design.