The ornamental design of a mock camisolefrontlayer, as shown and described.
FIG. 1 is a front perspective view of a mock camisole front layer;
FIG. 2 is a front elevation view thereof;
FIG. 3 is a left elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a right elevation view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof; and,
FIG. 8 is a front perspective view, showing the mock camisole front layer on a body form.
The broken line showing a body form in FIG. 8 is included for the purpose of illustrating environmental structure and forms no part of the claimed design.