Across the 18C globe, dress varied widely. In the early 1700s, British & British American colonial women dressed similarly, but they could get an idea how women in far places also might dress from clothing & costume drawings, which were becoming more popular & more widely available at the time.
The clothing worn by 18C British American women was characterized by great diversity, as one would expect in a society ranging from royal governors & wealthy landowners to indentured servants & slaves. During the period in Britain & her colonies, a woman's dress usually consisted of a gown & petticoat. The gown consisted of the bodice & skirt joined together, with the skirt open in the front to reveal the separate petticoat, which was an essential part of the dress & not an undergarment. The textiles used for the dress ranged from elegant to simple depending on the tasks of the wearer. As the New Republic of The United States of America was finding its way between the 1780s & 1800, a very noticeable change took place in the female British/American silhouette. The waistline climbed higher, until it reached the bust. The skirt was reduced in width & hoop petticoats were discarded except at very formal occasions.