Kate Middleton can't get enough of this blue maternity dress

Her title may officially be Duchess of Cambridge, but when it comes to recycling her clothes, Kate Middleton‘s an undeniable queen.

With just a month to go before she delivers her third child, the royal is getting plenty of extra mileage out of her maternity wardrobe. On March 6, she revisited a cream JoJo Maman Bébé coat from her second pregnancy with Princess Charlotte. A day later, she made a public appearance in a blue lace Marlene maternity cocktail dress from her favorite baby-on-board brand, Séraphine.

Kate Middleton wore this blue lace Séraphine dress on March 7. (Photo: Victoria Jones/WPA Pool/Getty Images)

The sold-out frock, with bell cuffs and a twirl-worthy A-line skirt, has become a staple of the pregnant duchess’s closet. She previously wore the dress (priced at £165, or about $229) for a luncheon with Norway’s King Harald and Queen Sonja during her recent royal tour with husband Prince William.

The royal cut a stylish figure at the Place2Be headquarters opening on March 7. (Photo: Victoria Jones/WPA Pool/Getty Images)

Her latest reason to wear it? The opening of the new London headquarters for Place2Be, a children’s mental health charity close to Kate’s heart. During her visit she met with staff, volunteers, and local schoolchildren.

It hasn’t gone unnoticed that the 36-year-old has once again chosen to wear the color blue, sparking speculation that the next royal heir will be a baby boy. Or maybe she just wants to match her famous sapphire engagement ring? We’ll find out soon enough when she gives birth in April.

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