The Duchess of Cambridge stepped out in west London on Wednesday, January 10th, visiting the kids from Reach Academy Feltham.
This marks her first royal engagement for the year.
Just one day after she rung in her 36th birthday, the pregnant mum was all smiles as she chatted to the boys and girls from the nursery, no doubt having her daughter Princess Charlotte in mind, who kicked off her big schooling milestone this week.
Royal fans were ecstatic to see Prince William's wife starting the year donning one of her favourite outfits.
Dipping into her maternity wardrobe, Catherine wore her trusty blue and green floral print dress by maternity brand Seraphine.
Many will remember Kate rocking her £65 ($120 NZD) dress throughout her pregnancy with Charlotte.
In fact, she featured the dress back in January 2015, when she was in the same point of her pregnancy that she's in now.
Three years later, it still looks sublime!
Prince George's mum was at Reach Academy Feltham in her role as royal patron for mental health charity Place2Be.
The royal chatted to parents who've been helped by the organisation, who supports 282 schools across the UK.
Kate was then given a tour of the school, where she got to speak to the students who've benefited from the emotional support.
In a very sweet touch, the kids gathered in the assembly hall, surprising Kate with a performance of Nina Simone's I Wish I Knew How It Would Feel to Be Free.
She told them she was "very impressed," adding, "I wish every morning could start off like that."
Another highlight for Kate, who is set to welcome her third child in April, was meeting four-month-old Bear - a very cute puppy getting ready to become a therapy dog.
Bear's owner Karen Howard shared the exciting experience, telling the press, "She said, 'He's a really fluffy dog.' "
"She said he was really cute and really well-behaved. The children were telling her, 'The dog makes us really happy.'"
During her time at the school, Catherine also chatted to teens about the issues with social media, asking them, "Do you feel that social media puts a lot of pressure on young people?"
She confessed it can be "so addictive."