Traditional styles are always adorable on little ones, 
Fine Interlock warm cotton onesie with long sleeves, baby collar, delicately trimmed with DMC Mulinée light blue lanyard , opening with snap buttons on the back,  and 100% hand embroidered light blue smock on the front.

Aprox. measures for a 3 month size:

length: 48cm (from shoulders to feet)
bust width: 17 cm
shoulder width: 20 cm
sleeves lenght: 17 cm