The clothing doesn't have the same morphs as the figure. The clothes needs the morphs added.

• Select the Clothing (the shirt)
• From the top menu choose Figure > Copy morphs from ...
• Choose the source of the morphs (l'homme)
• Choose the morphs you want to copy or [Select All]
• [OK]

This may take a minute depending on how many morphs you copied.

The clothing now has all the morphs you selected in it. You can save the already morphed clothes to the library so you don't need to do this again,