Keep in mind Mansi played the role of a traditional girl in IC not out of choice. Of course she looks much better in 4. If you had seen her in Kitne Mast Hai Zandagi on MTV her first serial she played the role of a hep girl, with highlighted hair, but she still looks even better in 4. So compared to the other serials she looks the best in 4. She must have worked hard to get that look.