Since Trisha Krishnan, Priyamani, Vimala Raman, Namitha & Shruti Haasan have already acted in Bollywood films, so not naming them. Also not naming Nithya Menon because I think we South Indians love her too much to send her to Bollywood.
1st row - Amala Paul, Samantha Ruth Prabhu & Kriti Kharbanda
2nd row - Anushka Shetty, Ragini Dwivedi & Lakshmi Rai.
3rd row - Radhika Pandit, Parvathi Melton & Pranitha.
4th row - Nithya Menon