Justin Timberlake shared a photo of himself working on his computer, captioning it “doing work…on my book”. Timberlake’s wife Jessica Biel took the opportunity to give the singer quite the compliment. Biel wrote, “Always in awe of your big…brain”. So cheeky! Timberlake is writing a book called Hindsight & All the Things I Can’t See In Front of Me. The book is said to “give readers a peek into [his] creative process through an intimate collection of images from his personal archives that range from childhood to present day”. It hits bookstores October 30.