Angela Levin has noticed a “difference” in Prince Louis when comparing the photos released on his fifth and sixth birthdays. Speaking on GBN America, the royal author told Mark Dolan the publication of the image on his sixth birthday came as a relief to her. In a break from tradition, the Wales’s opted not to send the photo out ahead of time under embargo and instead posted it to their socials in the middle of the day. Levin told Mark Dolan the image was “absolutely wonderful” as she noticed a subtle detail that royal fans may have missed. “When it came through mid-morning, I thought, ‘absolut…