A clip for retaining a trim cover assembly against a foam pad of a vehicle seat including a base having a hook end and a lock end. The base also includes a flange extending out therefrom. The hook end defines a hook, which secures the trim cover assembly to the clip. The lock end includes a lock and a lock hook. The foam pad includes a pair of inner foam pad walls that define a trench, through which the clip initially passes before contacting the foam pad. The clip is inserted into the foam pad so that the lock end passes completely through the foam pad to an underlying "B" surface. The lock hook is then rotated relative to the base until the lock hook engages the flange. The clip is firmly anchored within the foam pad by the lock end, which has a width greater than the trench.