Indians did not wear sewn clothes before the Muslims arrived in 1026 AD.
This is documented even in books written and published in the West around 1910 or so. Take a look at page 3 of this book.
@Maira La bhai especially for you.
cxvi, 530 p., 2, [54] leaves of plates (some folded) : 18 cm
archive.org
I quote:
"India was the first of all countries that perfected weaving,
sewing not being practised until after the Mohammedan invasion. The Greek name for cotton fabrics, sindon, is etymologically the same as India or Sindh. The word chintz is from the Hindu chhint, or variegated, while calico is from the place of its production, Calicut (p. 416). In delicacy of texture, in purity and fastness of colour, in grace of design, Indian cottons may still hold their own against the world — but not in cheapness. The famous Dacca muslin (p. 318), one pound weight of which could be made to cover a fabulous extent, is now superseded by the machine-made goods of Europe and America ; and European chintz now takes the place of the palampore (palangposh), a kind of bedcover of printed cotton produced at Masulipatam.
In the Panjab the weaver's trade still flourishes, but large quantities of the cheaper cottons are now made in India by machinery. Pure silk fabrics, striped, checked, and figured, are made at Lahore, Agra, Benares, Hyderabad, (Deccan), and Tanjore. Gold and silver brocaded silks, called kincobs (kinkhwab), are made at Benares, Murshidabad, and Ahmedabad. The printed silks which are worn by the Parsi ladies of Bombay are a speciality of Surat. Bahawulpur is noted for its damasked silks. Most of the raw silk comes from China. The Mohammedans are forbidden by their religion to wear pure silk, but may wear it mixed with cotton. Gold and silver wire, thread lace, and foil are made all over the country, for trimming shoes and caps, for stamping muslin and chintzes, for embroidery and brocades."