“Oh — you’re Jordan Baker.”
Nick states earlier in the novel that upon seeing Jordan he knew he had recognized her from somewhere, yet he just couldn’t decide where he had seen her. Turns out that she is a popular golf player whom he had seen in advertisements before.
The picture below is the actress playing Jordan Baker in the 2013 version of The Great Gatsby. This may be similar to a pose Jordan may have performed in one of her shoots for sport magazines.
To help improve the meaning of these lyrics, visit “The Great Gatsby (Chapter I)” by F. Scott Fitzgerald and leave a comment on the lyrics box