VIDEO : Cara Delevingne challenges Donald Trump to strike a pose

Cara Delevingne has taken to social media to call out US presidential candidate Donald Trump on his environmental record, as well as challenging the politician to recreate a ninja pose she struck in the White House. Elsewhere online things are more romantic, with Channing Tatum praising his gorgeous wife Jenna Dewan for being his "light". The pair have been together for almost a decade and are still one of the strongest couples in Hollywood. Demi Lovato has been pretty honest on her social media accounts recently too, uploading photos of herself with no make-up on and encouraging others to have confidence in themselves.