VIDEO: Denis Leary Challenges Justin Bieber to Twitter Feud on THE TALK

On CBS's "The Talk," Denis Leary reacted to the Taylor vs. Nicki Twitter feud and challenged Justin Bieber to a twitter feud for "stealing" his look by baring his backside in a recent post.

Later, Leary shares his wish list of stars for cameo roles in his series "Sex & Drugs & Rock 'N' Roll." Lady Gaga, David Bowie, Steven Tyler and Sharon and Ozzy Osbourne are among the stars Leary would love to see on his show. Watch clips from the appearance below!

CBS's Daytime Emmy Award-nominated talk show THE TALK features a panel of well-known news and entertainment personalities discussing current events, pop culture, contemporary issues, family, celebrity and the trending topics of the day. The daily one-hour series is hosted by Julie Chen, Sara Gilbert, Sharon Osbourne, Sheryl Underwood and Aisha Tyler. The hosts swap stories, challenge each other on issues and engage the studio audience and viewers at home about events in the headlines and their own homes. Show segments include guest interviews with entertainers and newsmakers, musical performances, cooking demos with celebrity chefs as well as real-world advice and tips from leading experts in fitness, diet, health, home, relationships, finance and fashion. The show was developed by Gilbert, who also serves as executive producer.