The Christmas 2013 stamps by Brazilian Correios celebrate the coming holidays and at the same time commemorate the 50th anniversary of Monica character.
On the first Christmas stamp Monica and Cebolinha are dressed as Santa Claus and Mrs. Claus. Cebolinha holds a gift bag with the present he wants to offer Monica – a traditional blue bunny, holding another small gift. The scene radiates harmony, brotherhood and joy – the eternal relationship between characters. The used colors are traditional for Christmas: green, blue, yellow with a predominance of red. The stamp's edges are partially altered by sinuous curves which makes an effect that the characters look out from within the image.
The second Christmas stamp colored in red and white illustrates Monica leaning her elbows on a gift's ribbon and wishing everyone "Happy Holidays" in a graceful, spontaneous and childish manner. The edges of the stamp have a triangular shape, thus, when the stamp is applied very close to the edge of the envelope, it seems to be gift-wrapped.