Has Sonal Chauhan done something to her lips?

Has Sonal Chauhan done something to her face? Over the past two days, we have spotted the 'Jannat' (2008) actress at separate film screenings (left and below left) and the first thing we noticed was how different her lips seem now.

When she celebrated her 30th birthday last month, she looked like she has all these years. Did she gift herself a cool lipstick? Or...