There are elements of '50s style there, but as Jennifer points out, the shoulder pads are a defining issue.
They did wear shoulder pads into some dresses into the early '50s, but they were small and soft, either thinly padded or just an empty bit of fabric to define the shoulder line. You can see that these ones are stiffly padded and triangular - to emphasise the shoulder, not just define it.
In fact, the whole silhouette with it's wide shoulders and flared (not gathered) skirt is more '40s than the curvier '50s. Whilst wool crepe and the colour were used in the later decade, they were also more common during the '40s.
Nicole