In this week's A-List Insider: Taylor Swift and Calvin Harris feud, Got7 spark racism row and Rihanna cancels concert after Nice attack.

Team Taylor or Team Calvin?

Taylor Swift and Calvin Harris' break-up just went from amicable to acrimonious really quickly. Fans have had to choose sides after the Scottish DJ and producer lashed out on social media at his former girlfriend for making him "look bad".

You see, Calvin was no impressed after Taylor's team decided to revealed that the songstress co-wrote his song This Is What You Came For under the under the alias 'Nils Sjoberg'. You know, like that big hit featuring Rihanna.

Taylor Swift, Calvin Harris
Swift and Harris ended their relationship in June REUTERS/Danny Moloshok; Anthony Harvey/Getty Images

In a string of escalating posts on Twitter, he questioned her decision to go public with the information, having previously agreed to keep their collaboration under wraps and even referencing her long standing feud with Katy Perry.

"I figure if you're happy in your new relationship you should focus on that instead of trying to tear your ex bf down for something to do," one message read.

Swift, who has been on a PDA tour with her new beau Tom Hiddleston, has yet to comment on his remarks. So are you Team Taylor or Team Calvin? Let us know in the comment section.

Got7 racism scandal

South Korean pop group GOT7 perform on stage during the 20th Dream Concert Chung Sung-Jun/Getty Images

And elsewhere, South Korea's answer to One Direction, Got7, are at the centre of an online storm after two controversial clips went viral. The K-pop group came under fire after their antics at an LA bash were filmed and uploaded to Snapchat.

While Yugyeom appeared to be appeared to be drunk, BamBam – who originates from Bangkok, Thailand – was filmed using the N-word. BamBam has since made an unofficial apology on his Instagram page telling fans: "I'm sorry for making a lot of you guys upset. This is all my fault. I'm sorry."

Rihanna in Nice During Bastille Day Attack

And finally, Rihanna is said to be "safe" following the Nice terror attack. The popstar was scheduled to perform at Allianz Stadium in the French city on Friday night as part of the European leg of her Anti World Tour but has since cancelled the show in the wake of tragic incident which killed at least 84 people and left at least 100 injured.

Officials and eyewitnesses have described the moment a truck drove on to the sidewalk and ploughed through a crowd of revellers who had gathered to watch fireworks as part of the Bastille Day celebrations.