Nicole Kidman and Keith Urban's divorce has taken an unexpected turn in Las Vegas, where the country singer was seen in April openly displaying tattoos dedicated to his estranged wife during the Academy of Country Music Awards, with one source claiming he has even 'touched up' the ink in a bid to win her back. The 58‑year‑old musician's fingers now spell out 'Mary,' Kidman's middle name, while 'NMK,' her initials, sit on his wrist and the word '…