The mother-of-four was seen leaving the plush Novikov restaurant in London on Thursday night (24 October) following a hectic day of publicity for her new book.
But, in true Pricey form, she didn't blend into the background too much, choosing a bright orange jumper and teeny tiny leather mini skirt for her dinner date.
Katie and Kieran looked in good spirits as they left the eatery, no doubt eager to get back home to see their baby son Jett.
The couple – who married in The Bahamas in January following a whirlwind romance – welcomed their first child together over the summer.
Katie is also mum to sons Harvey, 11, and Junior, 8, and daughter Princess, 6.
The model and author details her relationship with Kieran in Love, Lipstick and Lies, although she admits she's keen to keep their romance largely out of the spotlight.
While the couple had their critics after tying the knot so quickly, Katie tells fans in the book that this marriage is for the long-run and she's never been happier.
She writes: "He's great with my kids and such a genuine, lovely man. I love him so much. I really have saved the best for last."
It's not all been plain sailing for Katie, however, who told readers of her The Sun column today that she isn't surprised by ex-husband Alex Reid's reaction to her book.
Katie - aka Jordan - covers the breakdown of her marriage to second husband Alex in detail in her book, and he recently hit back with a tell-all interview of his own, where he claimed Katie had a bedroom alter-ego called Lady J.
"Well, I did warn you the brown stuff would start flying after I told the truth, the whole truth and nothing but the truth in my new autobiography," said Katie.
"So true to form my ex Alex Reid hit back... all that stuff about me having an alter-ego called Lady J was BS of course - I've never hidden that I'm very free-thinking in the bedroom with my man, so why would I lie?"
Alex has yet to respond.
Love, Lipstick And Lies is out now.
Check out some of Katie's most outrageous outfits below!