THE floral smocked dress worn by Princess Charlotte as she went to meet her new baby brother has sold out online.

Confident Charlotte, who is just days away from her third birthday, was at ease in front of the world's media at the Lindo Wing in London.

She charmed the crowds on Monday, by turning to wave as she led her father the Duke of Cambridge up the steps to the hospital to meet the newborn baby prince.

Her blue Periwinkle dress, with Peter Pan collar and short sleeves, and blue daisy smocking was by Little Alice London.

The outfit, which is priced from £40 for aged six months to £45 for six years, has sold out in all sizes.

The dress features contrast piping on the collar and sleeves, and a button back and sash tie.

The brand, which specialises in smocked clothes, is owned by Alice Avenel - who went to school at Marlborough College with Charlotte's mother the Duchess of Cambridge.