Sentence:  Sparrow size Virginia Gibson , with sparkling blue eyes and a cheerful smile , made a suitably perky Amy , while Melisande Congdon , as the real aunt , was positively monumental in the very best <WSD>Gibson</WSD> Girl manner . 
Meaning of the word marked with <WSD> tags:  the idealized American girl of the 1890s as pictured by C. D. Gibson