The 30-year-old "Hunter" actress is playing Rajnikanth's wife in the film that will see the veteran actor playing a gangster.
"Experience of working on 'Kabali' has been great so far. I am having an amazing time but it's too early to talk about it in detail," Radhika told PTI on the sidelines of ongoing Lakme Fashion Week Spring/Summer 2016.
The actress walked for designer Sonali Pamnani's "The Meraki Project," and was excited about her runway debut.
"I walked the ramp for the first time today. It was amazing. I was a bit nervous initially, but I loved the clothes Sonali gave me. I can wear it anywhere," she said.
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"I am a flats person. I love being comfortable. Wearing those high heels was the toughest part. But, I feel it is a necessity on ramp as it gives the body a very nice posture. I want to be comfortable both in flats and heels," she said.
Apart from P Ranjith directed "Kabali," Radhika will be seen in "Hunter 2" and filmmaker Shirish Kunder's short film debut "Kriti," which also stars Manoj Bajpayee.
Other designers to showcase their collection along with Sonali were labels ASA and Indigene.