Princess Charlotte was seen asking Princess Kate for help at tonight's Coronation concert.
The cheeky youngster, who stole the show with some of her hilarious reactions, was seen chatting to brother Prince George before the music began.
They were joined by around 20,000 members of the public at tonight's concert, which was hosted by Downton Abbey and Paddington star Hugh Bonneville.
Charlotte seemed to get stuck with her electronic bracelet, which was used later in the show to light up the grounds of Windsor Castle.
She turned yo mum Kate, who helped her eight-year-old daughter to sort out the bangle so she could enjoy the music.
The show featured performances by Take That, Katy Perry, Lionel Richie, Paloma Faith, Olly Murs, veteran rock guitarist Steve Winwood and Nicole Scherzinger.
Classical acts including Andrea Bocelli, Welsh bass-baritone Sir Bryn Terfel and Chinese pianist Lang Lang were also on the bill.
Hollywood star Tom Cruise, Dynasty actress Dame Joan Collins, adventurer Bear Grylls, singer Sir Tom Jones and former Strictly Come Dancing professional Oti Mabuse made an appearance via video.
The series of pre-recorded sketches revealed little-known facts about the monarch and will also include moments from beloved literary character Winnie the Pooh - seemingly echoing the famous moment Paddington Bear drank tea with the Queen during her Platinum Jubilee celebrations.
Nigerian singer Tiwa Savage, DJ Pete Tong with his Ibiza Classics project, and winner of The Piano TV talent show, 13-year-old Lucy, were also performing.
Meanwhile, fashion designer Stella McCartney delivered a spoken word performance with a conservation theme which reflected her and the King's "shared passion for environmental sustainability", the BBC has said.
Her performance was part of a broader nature-themed section of the concert which will also include a rendition of a 1980s hit by classical-soul composer Alexis Ffrench and London-based singer-songwriter Zak Abel alongside a house orchestra, band and choir.
Bollywood star Sonam Kapoor also delivered a spoken-word performance.
The Royal Ballet, the Royal Opera, the Royal Shakespeare Company, the Royal College of Music and the Royal College of Art came together for the first time to create a one-off performance featuring Sex Education and Doctor Who star Ncuti Gatwa and Olivier Award nominee Mei Mac.
Former Desert Island Discs and Crimewatch presenter Kirsty Young anchored the special live broadcast of the concert in the grounds of Windsor Castle after reporting from a studio at Buckingham Palace on Saturday's coronation day.
The concert on the castle's East Lawn saw TV presenter Clara Amfo and Diversity dance troupe member Jordan Banjo speaking to the artists backstage.
Rendered images released last month revealed that the concert will feature a Union flag-shaped stage which fans out to the audience.
The stage will also have a halo-like screen surrounding the roof, which the BBC said will "symbolise the Crown protecting the nation".
Together with the parapet wall steps in the middle, the broadcaster said the staging creates multiple levels for the 74-piece classical ensemble - formed from the strings of the Countess of Wessex's String Orchestra and woodwind, brass and percussion sections from the Bands of the Household Division - to make an abstracted Union flag.
There are four additional catwalks, which also form the flag shape, so fans can see acts close up.
At the back of the stage, the orchestra is sitting in front of the castle.
The Coronation Concert is being broadcast on BBC One, BBC iPlayer, BBC Radio 2 and BBC Sounds today from 8pm.
