Nayanthara has categorically rubbished rumours of plastic surgery, attributing her "different round face over the years" to diet and weight fluctuations. The Tamil actor added that she also loves doing her eyebrows often - calling them a "game-changer." "I love doing my brows. I take the time to perfect it because it's the real game-changer. I have had different round faces over the years. Maybe that's why people think my face is changing and I keep looking different. Maybe that's why a lot of people think that I have done something to my face. But that's not true. On record, not true," the Jawan star told Hauterfly. "Not that it's wrong, but for me, it just had been diet. There have been a lot of weight fluctuations, and my cheeks go in and out. You can pinch me, burn me, you will know there is no plastic in here," the 39-year-old added. Her admission comes right after Alia Bhatt reacted to trolls claiming part of her "face is paralysed, botox gone wrong". Taking a cue from Nayanthara's admission, let's understand how perfecting the brows can make the face look different. Eyebrows have a significant influence on the face as they define facial features, said Dr Shareefa Chause, dermatologist and cosmetologist, Shareefa's Skin Care Clinic, Apollo Spectra Hospital, Chembur and Criticare Asia Hospital, Kurla. "For instance, full eyebrows give you a younger look, while arched eyebrows give the face an elevated look. Eyebrow grooming is one of the most important aspects as it makes not only the eyes but the entire face stand out and appear different while adding structure to the face," explained Dr Chause. View this post on Instagram A post shared by HAUTERRFLY | A Fork Media Group Co. (@hauterrfly) She added that one should shape one's brows to complement one's natural features. "Start by mapping out three areas of your brows—the start, arch, and tail. If your face shape is round, for instance, make a rounded brow to help accentuate that shape," said Dr Chause. DISCLAIMER: This article is based on information from the public domain and/or the experts we spoke to. Always consult your health practitioner before starting any routine.