Model Kelly is back in the UK this week after an extended stay in Los Angeles, where she was filming a pilot episode for a new comedy TV show over there.
Last night, she was spotted with David during a late night stroll in the capital. Usually beaming for the cameras, the starlet looked in high spirits but kept her head down, perhaps trying to avoid the attention.
Kelly tweeted earlier this week that she was on her way to an important meeting, telling fans: "Final days of my First Autobiography Book Edit :)) feels like I puked on myself #PurgingDemons #MemoirsofaGlamourGirl."
No official release has been made on Kelly's book project but it was rumoured last year she'd landed a lucrative deal to put her memoirs on paper.
"She's had loads of high-profile romances, worked her socks off to get the breaks and suffered some heartbreaking lows. Her story will appeal to millions of women, while men will salivate over the pictures!" a source told The Sun.
As we haven't had official confirmation of Kelly's book, we're not 100% sure what it will cover but it's likely she'd touch on her TV, movie and modelling career and some of her more high-profile past relationships including those with Jason Statham, Billy Zane and Danny Cipriani. Not to mention, of course, her whirlwind romance and engagement to former Gladiator David.
As well as working on her book, Kelly has been over in the US filming a pilot for new comedy One Big Happy, co-starring Elisha Cuthbert from 24.
Got an iPad or iPhone? Reveal Mag is specially designed to fit!