Fashion designer Ivanka Trump, daughter of billionaire real estate mogul and presidential candidate Donald Trump, famously converted to Judaism before marrying Jared Kushner in 2009.

So it came as a little bit of a head-scratcher when on Friday, Trump's team sent out a pair of Instagram and Twitter posts attributing the famous Rabbinical quote "If not me, who? If not now, when?" to actress Emma Watson.

Source: Ivanka Trump/Instagram
Source: Ivanka Trump/Instagram

The full quote, attributed to important ancient Jewish figure Hillel the Elder, reads: "If I am not for myself, who is for me? And if I am only for myself, what am I? And if not now, when?"

While Watson did repeat a modified version of the quote during a 2014 speech at the United Nations, the Huffington Post reported, it's a pretty famous quote — and the screwup inspired plenty of mockery.

Unlike her father, the eldest Trump daughter probably does not manage her own social media accounts — but, the lifestyle site associated with her Twitter and Instagram pages, is known to employ a number of unpaid interns who work on various part of the site's operations. Best of luck there.