Marie Claire columnist and blogger Nicolette Mason used the latest episode of her YouTube show to call out Marc Jacobs for failing to follow through on the company's promised plus-size line.

Mason, who writes the "Big Girl in a Skinny World" column for the magazine, was responding to reader questions about shopping for plus-size clothes and accessories. When one reader asked about high-end designers who serve the plus-size market, Mason said:

"Robert Duffy, Marc Jacobs C.E.O., if you're out there, this is my chance to call you out again. Because two years ago you promised us a plus-size line from Marc Jacobs. Where is it? I want it. I would be your customer, and you know it."

The comments about Jacobs start at around 3:23 in the video.

In August of 2010, Duffy Tweeted that developing a Marc Jacobs plus-size line was a top priority for him. "We gotta do larger sizes," he wrote. "I'm with you. As soon as I get back to NY. I'm on it! It will take me about a year. But stay with us." He later mentioned that he was "in the very beginning stages" of taking meetings about the line — but it has yet to materialize. What gives?