No, she wears her usual two family orders, as we can see on this larger picture:
(Source: Flickr/romanbenedikhanson)
We can also notice that the Queen is wearing, pinned at the tip of her neckline, a small dark ribbon, which is the ribbon and cross (in miniature size) of "Companion of the Order of Liberation". The Order of Liberation was founded by General de Gaulle in 1940 to reward people who had distinguished themselves in the task of liberating France and the French Empire from the German occupation. "Companion" was the only rank of this order, of which De Gaulle remained the only Grand Master (even when he was retired from power; no other Grand Master was appointed after De Gaulle's death in 1970). This order still exists, but the last crosses were awarded in 1946 (the last living "companions of Liberation" are therefore very old now... and very few [less than 20]). The Order was exceptionally reopened twice by General de Gaulle after 1946: in 1958 for Sir Winston Churchill, and in 1960 for King George VI (posthumously). Apparently, Queen Elizabeth II received the cross of Companion of Liberation on behalf of her late father, and wore it during De Gaulle's State visit.
We can see the medal slightly better on this picture, taken during the return dinner at the French embassy: