Cheryl Cole has a secret…and I’d like to know what it is. On Sunday she was papped arriving at a London airport with fuller, plumper and more glossy lips than I’ve ever seen her with before. Lips that made me ever-so-slightly jealous.

My first thought was surgery – had she opted for collagen fillers in pursuit of lip perfection? All thoughts of this were dashed, however, when I saw photos of her taken at an event in Munich last night (just 24 hours later), with the same old Cheryl Cole pout we know and love.

So what’s her secret? How can she go from pronounced pouty to naturally normal in just a day? I’m betting she’s taken to wearing lip-plumping glosses – they look just like a lip gloss but have ingredients that energise and stimulate blood flow into your lips, causing them to swell. My personal favourite is Lip Injection, £10, by Too Faced, which stings when it’s first applied but leaves your lips fuller and plumper for a good hour.

I guess we’ll never know her real secret unless she spills the beans. And if she does, you’ll be the first to know