Do you know that YRF has actually made a South movie? Aaha Kalyanam (2014) is the Tamil remake of Band Baajaa Baaraat. Anushka's role is played not by any South actress but by none other than Vaani Kapoor who is the female lead in War.
Note: Vaani has not worked with any production house other than YRF. For that matter, Parineeti has worked mostly with YRF only. Only since 2018 (Namaste England, Kesari, Jabariya Jodi) are some of her movies going to Zee. Before then there are only Hasee Toh Phasee (Viacom).