Jay-Z is one supportive hubby. The rap mogul and father-to-be has joined Beyoncé on her strict, "partially vegan" pregnancy diet, reports Us Weekly.
"Jay's trying to be disciplined, and he needs the energy to support her," a source adds.
For her part, Bey has been maintaining her famous discipline throughout her pregnancy. "I've been really conscious [about food]," she told 20/20 recently. "I've been trying my best not to lose control!"
Bet Jay is wishing his wife was having "normal" pregnancy cravings, like ice cream and pizza, rather than tofu.

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