The three women are all a part of BeautyCon 2014, the global summit held in Los Angeles, which brings together top beauty, digital media, and fashion influencers.
Osbourne, 29, has worked with BeautyCon in the past and is continuing her partnership this summer. The Fashion Police star will serve as a keynote panelist, after speaking about haters at the 2013 convention.
The TV personality will be joined by Mota, 18. The Californian teen is a huge success on YouTube, where she records videos about fashion, beauty, and lifestyle topics. She boasts more than 6.5 million subscribers to her channel, and recently launched a collection with Aéropostale. She will also serve as a keynote panelist.
Pretty Little Liars actress Mitchell, 27, will also lend her voice to BeautyCon 2014. She will lead a question-and-answer session with style blogger Aimee Song.
The summit will be held in partnership with ELLE on Saturday, August 16, from 10am-6pm in L.A.