Khloe Kardashian uses pregnancy cream to ''tighten'' her neck.

The 30-year-old reality TV star has admitted to using Mama Mio's Pregnancy Boob Tube formula - which aims to reduce expectant mothers' stretch marks - to keep her décolletage looking toned.

The brunette beauty became a fan of Mama Mio's products when her sister Kourtney, who has three children, Penelope, two, Mason, five and three-month-old Reign with her partner Scott Disick, used them during her pregnancy.

She said: ''Kourtney got me into all these Mama Mio products that are all natural. I think she used them when she was breast-feeding. Their names are really cute - there is one that's called the Shrink to Fit Cellulite Smoother that I like. I use one of their other products called the Pregnancy Boob Tube every day. It's got avocado oil and shea butter so when your boobs are growing you don't get stretch marks. I like it though, because it tightens your neck, too. I've been using it everyday for a year.''

While the cream does wonders for her appearance, Khloe added using the product has prompted people to speculate over whether she is pregnant.

She joked: ''Now people always ask me, 'Why do you have this?' Hinting as if I'm trying to have a baby, and I'm like, 'No, no. It's just because I f**king like it'.''

The 'Keeping Up With The Kardashians' star also loves applying her own make up and shared her top tips for replicating her glowing complexion.

She told Into The Gloss:''I love doing my makeup - mostly because I'm pretty good at it. What I can't do is hair! So I like to have that done.

''On my face, I always start with the Giorgio Armani Light Master Primer. It just smooths you out and makes makeup go on so much easier.

''I'm really shiny but I love being matte - and maybe I'll add on a little shimmer with the Urban Decay Naked Illuminated Powder in Aura.''