Is it permissible to publish pictures of unveiled girls on social media, and will the husband be held accountable for his wife's doing so?

If girls reach the age where the hijab becomes obligatory, it is not permissible to post their pictures online. The husband must advise his wife and prevent her, reminding her of the Almighty's saying: "And they will surely carry their [own] burdens and other burdens along with their [own] burdens; and they will surely be questioned on the Day of Resurrection about what they used to invent," and of the Hadith: "Whoever introduces a good practice... And whoever introduces a bad practice..." If she does something without his knowledge, consent, or his shortcomings, then there is no sin upon him, for the Almighty's saying: "And no bearer of burdens will bear the burden of another."