New Delhi, Dec 14 (IANSlife): Bollywood actors and brand ambassadors for potato chip brand Lay's, Ranbir Kapoor and Alia Bhatt are being seen on TikTok for duet challenge that has seen over 5 billion impressions in three days.

The brand's Smile Deke Dekho Duet Challenge urges users to share maximum smiles in less than 10 seconds, with the catch that the smile must be unique and different. According to Lay's, the challenge saw over 5 billion impressions and 10,000 user generated content in just 72 hours.

The video features Ranbir having a blast as he is shown depicting a multitude of expressions and smiles while posing with a Lay's Smile pack. The ace actor is seen smiling, winking, and pouting, while grooving in the challenge video. Alia too is seen showcasing a wide array of expressions and sharing all kinds of smiles.

The brand had roped in the actors as its faces in October. It is their first time endorsing a brand together.