Sophie Theallet has vowed not to dress Melania Trump when she becomes First Lady and urged other designers to follow her example.

She tweeted an open letter in which she refused to dress the U.S. President-elect Donald Trump’s wife.

“Dressing the First Lady Michelle Obama for the past 8 years has been a highlight and an honor. As one who celebrates and strives for diversity, individual freedom and respect for all lifestyles, I will not participate in dressing or associating in any way with the next First Lady. The rhetoric of racism, sexism and xenophobia unleashed by her husband’s presidential campaign are incompatible with the shared values we live by,” she wrote in her emailed statement.

She encouraged her fellow designers to do the same.