The source site for the first pic doesn’t mention the date of the pic but its likely taken 1920s or later (see for e.g. a 1929 pic). By this time the old costume had been replaced by the sari, earlier styles can be seen in [X]
The second pic is also likely from the 20s and is the family of the singer, Kozhikode Abdul Khader. The family was Christian. The lady on the right is quite stylish and has shoes (Mary-Janes?), the pallu bunched and pinned with a brooch which is quite characteristic of the decade. In both pics the blouses are fairly loose which is also common for the decade.
There is a good deal of Western clothing in both pics, possibly due to a) affluence and b) religion.
See also Manglorean Catholics.