STR alias Silambarasan has been signed up as the brand ambassador of PepsiCo India’s 7up for Tamilnadu. With this exciting offer, STR joins the elite list of Vijay, Vikram, Suriya and Madhavan who had earlier  endorsed Coca Cola and Pepsi. 7up had earlier signed Allu Arjun as the brand ambassador for Andhra Pradesh. STR with his unique style and mannerisms is all set to rock the advertisement world. STR is excited about accepting this new role right ahead of his forthcoming movie Osthe which is all set to release big worldwide on Dec 8th.