New Delhi: Do you really want to know what makes Bollywood babes look so beautiful? Then, you don't have to wait to know the secrets. Because the most essential thing that makes them look beautiful is not natural but is the effect of upgraded technology that reflects from their perfect pretty faces. Cosmetic surgery, proved a boon for most popular actresses of Bollywood. The credit of their hot and sexy looks goes to impeccable effects of cosmetic surgeries. Here's a look at some of the most known faces of Bollywood who took the help of these surgeries to bring perfections to their looks: Priyanka ChopraOne of the highest paid actress of Bollywood now, was crowned as Miss World in year 2000. Since then she has been attracting fans with her marvelous acting skills in Bollywood. But, the mystery behind this perfect look of Priyanka is reportedly the two major cosmetic surgeries that she has undergone.She reportedly got her nose corrected in 2010, while she was on a 3 day trip to London. Also, the beauty of this 30 year-old-actress is her lip correction surgery, which she had gone through in year 2012 during the shooting of ‘Barfi'. Kareena KapoorThe style diva of Bollywood looked simple in her debut movie ‘Refugee'. It could be because till that time she had not experimented with her looks. According to reports, now she is the one who has undergone the maximum number of plastic surgeries to enhance her looks. Out of many, most prominently Kareena has reportedly worked on her breast, that now looks more enhanced. She even underwent Rhinoplasty to make her nose look sharper and smaller. Even though she is 32, post surgeries she looks sexier and hotter. Katrina KaifThe Barbie doll of Bollywood, Katrina Kaif is next in queue for her corrected looks and taking help of plastic surgery to look perfect. Katrina reportedly had Botox treatment to have those perfect lips . Katrina's modified nose adds an artificial tint to her natural beauty. She has even reduced the thickness of her nose to give it a slimmer look, which also enhances her charm too. Aishwarya RaiFormer Miss World (1994), Aishwarya Rai Bachchan also went under the knife.It is evident from comparing her pictures that she went through nose job, correction in jaw line and teeth and cheek implants. The rhinoplasty would have been just to smooth out the bridge of her humped nose. Shilpa ShettyShilpa Shetty is also one of those who took the help of science and technology to change her destiny. She believed in her dreams and went through surgeries to look apt enough to compete with other Bollywood divas in looks. Shilpa completely transformed herself. She has reportedly gone through butt implants, breast implants and nose job. Bipasha BasuThe gorgeous and sexy Bollywood babe Bipasha Basu, apparently got a botox injection but also got her cheekbones surgically altered. Also she has got an ear job done. She enhanced her bust line by three inches. More than Bipasha, the efforts are of her surgeon which made her look more sensuous. Anushka SharmaThe rising star of Bollywood, Anushka Sharma who started her career five years back with a superhit movie, ‘Rab Ne Bana Di Jodi', also modified her looks with surgery. She reportedly got a nose job done for a sharper nose. It might be one reason that she flaunts her new hair style and amazing makeup with her corrected looks. Mallika SherawatMallika Sherawat can be called the real ‘plastic babe' of the industry. She reportedly went under knife to enhance her looks. Mallika's surgeon should be given the credit of making her look sexy and hot. She got a breast job done and got her jaw line corrected. Also, she took help of Botox. By choice or by demand, these hot babes prove that cosmetic surgery has become essential, to susutain the race and competiton in the industry.