She’s used to sparking plastic surgery rumours with her seemingly age-defying complexion. But it was Nicole Kidman’s cleavage that once again had fans wondering whether she’s gone under the knife after she promoted her new film Practical Magic 2 over the last few weeks. The 59-year-old Australian actress – who has been plagued by boob job rumours for years – put on a remarkably busty display in a low-cut Atelier Versace gown designed by Pieter Mulier at the LA premiere of the film at the end of last month.The dramatic dress featured an intricate lace neckline that showed off Nicole’s ample bust.She completed the glamorous look with a matching black lace choker, coordinating heels and statement earrings.The eye-catching display immediately prompted a flurry of speculation, with some questioning whether Nicole’s bustier appearance could be the result of cosmetic surgery. Nicole Kidman’s cleavage that once again had fans wondering whether she’s gone under the knife as she promoted Practical Magic 2 over the last few weeks The 59-year-old Australian actress – who has been plagued by boob job rumours for years – put on a remarkably busty display in a low-cut Atelier Versace gown designed by Pieter Mulier at the LA premiere of the film at the end of last month Among them is Beverly Hills plastic surgeon Dr Cat Begovic, who exclusively told Daily Mail that the latest photos suggest Nicole has indeed had a breast augmentation. While Dr Begovic has not personally treated or examined Nicole, she notes that Nicole appears to have a ‘more defined cleavage and upper pole fullness’ which indicate that she may have gotten breast implants.’They look to me to be around 225-250 cc moderate projection,’ she speculated, adding: ‘They are proportionate to her frame and she looks feminine and stunning.’ Breast implants come in different projections, ranging from flatter, more teardrop-shaped options known as ‘low profile’ to increasingly round and fuller ‘high’ or ‘ultra-high profile’ implants. The star has previously admitted to trying Botox, but said she ultimately stopped using the injectable after being unhappy with the results.Nicole has never confirmed or denied undergoing breast augmentation. Daily Mail has gone to her for comment.Meanwhile, there was an amusing twist to the cleavage chatter at the LA premiere, with Nicole’s longtime friend and co-star Sandra Bullock making a cheeky reference to their figures.The 62-year-old actress joked to People magazine that despite knowing Nicole for around three decades, their ‘boobs are still in the same place.’ The eye-catching display immediately prompted a flurry of speculation, with some questioning whether Nicole’s bustier appearance could be the result of cosmetic surgery Nicole is pictured left in 2003, and right, at the Practical Magic 2 photocall in London last month Nicole also put on a busty display in a strapless Chanel gown at the London premiere of the film Nicole was recently praised for her ‘more natural’ appearance during a recent interview about Practical Magic 2 on the BBC.During the sit-down Nicole beamed from ear to ear as she animatedly discussed her love for cats.The Hollywood star’s face appeared less taut than fans are accustomed to seeing. Several took to social media to praise Nicole’s appearance, saying they preferred her softer, more relaxed features.’Finally some movement around her eyes and forehead! So much better,’ one person wrote.’Nicole looks so good. More natural… it looks so gorgeous,’ a second added. ‘Looks absolutely stunning! Less Botox totally worth it!’ another wrote, and someone else chipped in: ‘Nicole is a little more natural… Finally!’