Printed at 0.1mm layer height using Slic3r's modifier meshes and dual extrusion to add stripes. Filaments: Inland Green PLA (190c), BamTack White PLA (190c), Sienoc Red PLA (200c). Ooze wall/prevention turned on with 5 degree delta. Pieces fit well with a little slack when using Slic3r's hole adjustment setting at 0.1mm, but the slight slack doesn't let the pieces slide off too easily. Should be a snug fit if printed as-is without adjustment.
Be sure to check your preview and extrusion width. With a 0.4 width (nozzle size), Slic3r misses some of the infill due to rounding (barely visible on the red bow). Adjusting this up to 0.5mm takes care of it.