What she is wearing here is a typical MATERNITY TOP/DRESS. I know, I wore one of those also in 1960's
Another time, another airport; now he looks 10 and his sister about three...
Barack Obama, aged about 10, with his mother Ann and father Barack Senior, celebrating Christmas in Hawaii. Although his parents separated when he was two, they stayed in touch. His father returned home briefly from Harvard.
http://news.sky.com/skynews/Home/Sky-News-Archive/Media-Gallery/20082851310110
In 1967 and therabouts, there was a period when we wore “sack “ dresses that looked like maternity dresses. We wore them short with white stockings. I remember mine and my mother in law laughing when she saw me in it saying I looked pregnant.It was all the rage with the young hippie set. And those were the years of hippie clothing, long with beads and loose fitting.