YouTuber and makeup master James Charles lost more than 2 million subscribers as of late Sunday amid his feud with fellow video beautification blogger Tati Westbrook. As of Friday, the 19-year-old beauty blogger had around 16 million subscribers, but the number fell to almost 14 million Sunday afternoon.

Charles and Westbrook's drama began in April when the former posted an ad for Sugar Bear Hair supplements to his Instagram story. It was later found that the brand was a huge competitor for Westbrook's supplement brand, Halo Beauty. In a 45-minute video, titled "BYE, SISTER," Westbrook criticized her former friend and accused the star of, among other things, manipulating people’s sexuality.

Charles, who is worth an estimated $12 million, has collaborated with celebrities including Katy Perry, Kim Kardashian and Demi Lovato. At the age of 17 he made history by becoming the first ever male to appear on the front page of CoverGirl magazine.

In the video, Westbrook said Charles' actions made her "literally want to vomit." In the extensive video, she said: "I have finally had enough... The last phone conversation me and James Charles had, is that he said something about a situation that happened at my birthday in Seattle." She paused for a moment before adding: "Oh my God, you tried to trick a straight man into thinking he’s gay, yet again – and somehow you’re the victim?

"You know it’s really disgusting to manipulate someone’s sexuality, especially when they are still emerging into adulthood and don’t have everything figured out... You are using you fame, power and money to play with people’s emotions. You’re threatening to ruin them and embarrass them, and you’re doing that to have them behave sexually in your favour even if they’re straight?" Westbrook added.

Charles took to YouTube and offered an eight-minute apology, but by then over 24 million people viewed the video and he had lost over one million followers, including celebrities such as Kylie Jenner, Miley Cyrus and Shawn Mendes.

In the apology, Charles addressed the points made by Westbrook in her video.

"To Tati and James Westbrook I'm sorry for everything that is going on, everything that I've put you through over the past few weeks," Charles said. "Most of my career over the past few years has been about me making mistakes and trying to learn and grow from them. I haven't always done the best job of that, I can admit that," he added. "But I have always tried."

"What sucks the most is that I know there's nothing I can say or do to ever earn that friendship or trust back, but I don't blame them for it... A lot of the time when I've had to address things in the past, I've acted out of impulse and I've gone off and tried to pull receipts or facts or screenshots and play the victim. I'm not doing that today, I'm not. That is all I have to say, I'm sorry," he also said.

Charles was also slammed by fans this weekend for turning up hours late to an Australian meet-and-greet amid his public feud.

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A webcam is positioned in front of YouTube's logo in Paris, June 28, 2013. LIONEL BONAVENTURE/AFP/Getty Images