AM Daily Buzz: Justin Bieber's back on 'Tonight,' Cate Blanchett cast as a very funny red head and more!

Justin Bieber: What Do You Mean?

Happy Thursday and welcome to your AM Daily Buzz! Check out some of the hottest news in pop culture right now.

1.) Justin Bieber made an appearance on "The Tonight Show" last night promoting his single "What Do You Mean" where he performed with The Roots, among other things.

2.) Cate Blanchett has been cast as Lucille Ball in an upcoming biopic of the TV legend.

3.) Get ready because the lineup for ABC Family's 13 Nights of Halloween is out and includes the likes of "Harry Potter" and "Batman."

4.) It's back to school for many kids, especially those with famous moms and dads! Check out some great Instagrams from the famous parents themselves.

5.) Avril Lavigne and Chad Kroger have announced their separation after two years of marriage in a touching Instagram post.

6.) Stars are flocking to the U.S. Open this week with the likes of Kelly Ripa, Amanda Seyfried and Josh Groban.

7.) Despite the rumors, a source says that Tom Brady and Gisele Bündchen are not headed for divorce.

8.) Sandra Bullock's boyfriend, Bryan Randall, can't stop gushing about his new leading lady!

9.) Donald Trump has stated that he would love the chance to run against Kanye in the 2020 election.

Check out more pics of Justin Bieber below!

The Evolution of Justin Bieber
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AM Daily Buzz: Justin Bieber's back on 'Tonight,' Cate Blanchett cast as a very funny red head and more!
Canadian pop megastar Justin Bieber (C) plays basketball with a young survivor of Super Typhoon Haiyan in Palo, Leyte province on December 10, 2013. Pop megastar Justin Bieber sang to and played basketball with young survivors of the Philippines' deadliest typhoon on December 10 after he flew into the disaster zone to boost an international relief effort. AFP PHOTO (Photo credit should read STR/AFP/Getty Images)
LOS ANGELES, CA - JULY 27: The winner of Champ of Charity singer Justin Bieber (L) and singer Cody Simpson onstage at the 2014 Young Hollywood Awards brought to you by Samsung Galaxy at The Wiltern on July 27, 2014 in Los Angeles, California. The Young Hollywood Awards will air on Monday, July 28 8/7c on The CW. (Photo by Frederick M. Brown/Getty Images for Variety)
The "Baby" singer headed straight to the salon for a new makeover ... this time going blonde! (Instagram)
LOS ANGELES, CA - AUGUST 23: Justin Bieber attends a VMA Pre-Party hosted by Chris Brown & Pia Mia featuring Bera on August 23, 2014 in Los Angeles, California. (Photo by Araya Diaz/Getty Images)
NEW YORK, NY - JAN 17: General view of a Justin Bieber for Calvin Klein Billboard located on Houston Street on January 17, 2015 in New York City. (Photo by Tomas/IMAGES/Getty Images)
LAS VEGAS, NV - MARCH 15: Singer Justin Bieber arrives at Omnia Nightclub at Caesars Palace to celebrate his birthday on the nightclub's opening weekend on March 15, 2015 in Las Vegas, Nevada. (Photo by Gabe Ginsberg/Getty Images)
CANNES, FRANCE - NOVEMBER 07: Singer Justin Bieber attends the 17th NRJ Music Awards ceremony at Palais des Festivals on November 7, 2015 in Cannes, France. (Photo by Marc Piasecki/WireImage)
LOS ANGELES, CA - JANUARY 18: Justin Bieber and Corey Gamble are seen in Beverly Hills, Ca on January 18, 2016 in Los Angeles, California. (Photo by Light Brigade/Bauer-Griffin/GC Images)

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