"@MELANIATRUMP to say you will stand for 'anti-bullying' is hypocrisy. Your husband is one of the most notorious bullies we have ever witnessed," Gaga tweeted.
The 30-year-old singer's comments come on the heels of Melania's appearance on the Donald Trump campaign trail, where she delivered a speech to a crowd of supporters in Philadelphia, during which she discussed her desire to eliminate internet bullying if she becomes First Lady of the US.
The Republican presidential candidate has come under fire throughout the election campaign for his comments on women and illegal immigrants.
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