Prince Harry practised his best baby voice when he met an adorable little girl - and it worked a treat.
The three-month-old, who was sitting on her mum's lap, loved the dad-to-be's voice and started smiling within seconds.
Dressed in a little pink babygrow, she had been watching a ballet class at the YMCA in South Ealing which Prince Harry took part in .
When it was finished Harry walked over to her and crouched down so he was right in her eyeline.
He tickled her tummy and poked his tongue out as he spoke to the little one using a cute little baby voice.
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Harry asks her mum if she's been sleeping, to which she replied "sometimes".
He later says "she's very sweet" - and we totally agree!
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Harry was at the centre to learn about their work on mental health and see how they are providing support to young people in the area.
He also joined a roundtable discussion convened by his 'Heads Together' campaign during which organisations who work directly with young people discussed the current climate of support for mental health problems.
But as well as the important discussions, the dad-to-be got to have a bit of a giggle as he joined a ballet class.
He tried out the 'balance challenge' where the little dancers have to balance a plastic disk on their head and stand on one leg with their arms out straight without falling over.
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Despite a few wobbles at the start, Harry managed to keep his balance.
He also offered some advice to the kids, saying: "Pick a spot and state at it."
There's a chance he's also offered this advice to his niece Princess Charlotte, who is also "very keen" on ballet.
Her mum the Duchess of Cambridge has said she's taking lessons and really enjoys it.
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She has also been to see a few performances with Kate, including a special viewing of the Nutcracker at the Royal Opera House in London just before Christmas.
After watching them perform a little routine he had a chat with the kids, asking them how long they were going to do ballet for.
One adorable little girl said she planned on doing it for 100 years, which had the whole room giggling.
