After Ice Bucket Challenge and No Make-Up Challenge, the latest to do rounds in the social media is '100 Happy Days Challenge'. And Trisha has emerged the first celebrity from the south to take it up.

"I've just signed up for the 100HappyDays challenge! Can you be happy for 100 Days in a row?" Trisha posted on her online page, adding: "I choose happiness n love. N on that note I begin....#100happydays." She has also uploaded a photo of her in a happy mood.

Trisha has taken up this challenge at a time when she has broken up with Varun Manian, with whom she got engaged some months ago. Recently, the popular actress declared on her microblogging page that she is 'single'.

I choose happiness n love ❤️ N on that note I begin....#100happydays pic.twitter.com/OFPrzNOQTM

— Trisha Krishnan (@trishtrashers) May 13, 2015