Underneath the TikTok posted by HELLO!, one social media fan queried, "Louis is four... surprised to see him using a milk bottle?" while another disputed that it was a milk bottle and wrote, "It's a sippy cup - brilliant to reduce spills, ruined clothes, chairs, rugs and less mess for someone else to clean." In the short snippet, which was originally broadcast by Sky, the mum of three (and future Queen Consort) can be seen handing Louis - who well and truly stole the show over the Jubilee weekend with his funny faces - a drink. But some eagle-eyed viewers of the clip have questioned what exactly it was that the Duchess passed over to the four-year-old. A clip of Kate Middleton, Duchess of Cambridge, and her youngest child, Prince Louis, at the Queen's Platinum Jubilee celebrations earlier this year has resurfaced on TikTok and left royals fans slightly confused.