Absolutely no sex or nudity, even though it is clear in this version that Clara and Drosselmeyer's nephew Hans-Peter do fall in love.
The Act II Pas de Deux is danced by the Sugar Plum Fairy and her Cavalier. It is highly classical and not suggestive at all.
Clara and Hans-Peter's Pas de Deux in the first act is highly romantic, but not suggestively sensual.