Not to be confused with the terrifying Stephen King novel about a murderous clown, "It" will cover "everything from Alexa's thoughts on life, love and music to her favourite looks and how to decide what to wear in the morning," according to Amazon.
The front cover was revealed today by Alexa on Twitter and we know you shouldn't judge a book by its cover, but gosh it's pretty.
Even though it won't be on bookshelves until September, here are five reasons why we've pre-ordered our copy…
1. She's inspired everything from hairstyles to her own Mulberry bag
Ombre/dip-dye/finger painting - whatever you call it, Alexa started that hairstyle back in 2009. And as for accessories, the Alexa Mulberry bag became the "It" bag loved by celebs including Olivia Palermo and Holly Willoughby when it was launched the same year. The satchel was credited with increasing the British accessory brand's sales by 57%. But what inspires this muse?
2. It will be pretty
Alexa admits she's a very visual lady, in fact she claims that her biggest talent is drawing. Talking to Vogue in March, the presenter claimed: "Drawing is probably the main, number one thing I can do - that I'm best at. It makes sense, if I can get dressed well then that's what I'm good at: visuals." "If" is bound to be a beautiful coffee table book.
3. Will she dish the dirt on famous friends and exes?
The 29-year-old fashionista famously dated Arctic Monkeys frontman Alex Turner and schmoozes with the likes of Pixie Geldof, Kelly Osbourne and Anne Hathaway. Imagine the gossip she's privy to!
4. We want to see the girl behind the style
She's a bit of an untouchable fashion icon so we're looking forward to some home truths from Alexa - has she ever spent a Friday night in in her onesie watching reality TV? Any wardrobe malfunctions? And of course, embarrassing school photos!
5. We can't wait for fashion and beauty tips straight from the It-girl's mouth
She makes it all look so easy and effortless but we reckon Alexa has a few beauty and style secrets up her sleeves. Here's hoping she's in a sharing mood.