Never mind the tea dress, I've now got my eye on making something more along the lines of this cute 'Perky Playsuit' (awful term, but sweet nonetheless):
Details are as follows:
"Simplicity Pattern 1609 Vintage Plus Size Perky Playsuit and Skirt, dated 1956. This includes; Women's One-Piece Playsuit and Skirt: The perky, sleeveless playsuit is styled with a round neckline in front that dips to a V in back. Shorts feature an inverted pleat on either side of front and have pockets in the side seams. The skirt has soft pleats in front and is gracefully flared. View 1 bodice has bias fold tape on collar edge and bow trim in back. View 2 shows playsuit with tie belt and a contrasting skirt."
Found on http://vintagepatterns.wikia.com but where to find it in real life?