(Undated) -- The co-founder of Lululemon is no longer chairman of the company.

Chip Wilson has stepped down and is being replaced by Michael Casey. The official announcement came late Monday. Wilson's downfall came not long after he stirred up controversy by saying on Bloomberg TV that "some women's bodies just don't actually work" for Lululemon's yoga pants. He has since issued an apology on YouTube and on Lululemon's Facebook page.

However, that hasn't satisfied some critics who've formed an online petition demanding a more sincere apology and calling on Lululemon to make yoga clothes in larger sizes.