In case you hadn't noticed, the celebrity world is absolutely baby mad right now. Rochelle and Marvin Humes, Wayne and Coleen Rooney and Channing Tatum have just become parents, Kim and Kanye and Wills and Kate are about to become parents, and Frankie Sandford, Jennifer Love Hewitt and Kate Winslet have all recently announced pregnancies.

So even though we're absolutely swamped with news of baby showers, morning sickness and the like - and have even turned to speculating on what some expectant celebs will name their little bundles of joy - there's still a few famous faces who are stubbornly refusing to let us celebrate their ability to procreate. Here's a few child-less stars that we just can't wait to see become parents!

Cheryl Cole

Let's face it, the hysteria over Cheryl Cole's pregnancy would be second only to what the Duchess of Cambridge has experienced. Disagree with us? Well, may we remind you that the former X Factor judge almost saw her Twitter explode when she merely mentioned the word 'pregnant' in a tweet to Coleen Rooney in March.

Cheryl is still very much the nation's sweetheart, and seeing her settle down with the perfectly pleasant Tre Holloway would be all the more satisfying after the years she spent being mucked about by ex-husband Ashley. Cheryl, now that Girls Aloud are over, we think it's time to welcome something new into the world...

Jennifer Aniston

Adriana M. Barraza/WENN.com

This entry goes without saying. When her ex-husband Brad Pitt ran off with Angelina Jolie and had all the children, Jennifer Aniston became almost like a plucky heroine in a real-life rom-com who we desperately wanted to see settle down with the man of her dreams.

After a string of failed relationships with the likes of John Mayer and Vince Vaughn, it seems Aniston has finally found love with fiancÃ© Justin Theroux, which, you know, is definitely worthy of a cheer. But the whole world won't truly be up dancing in the metaphorical cinema aisles until her story arc is complete and the couple bring a baby back to their marital home as a slushly love song plays over the credits.

Justin Bieber

Granted, at 19 the Biebs is still just a wee nipper himself, so we don't really want to see this for another few years. However, we must admit that we thoroughly enjoyed the scandalous few weeks in 2011 when everyone though that Bieber really was a daddy to fan Mariah Yeater's baby. Judge us if you want, but it was a bloomin' good story, and you loved reading about every outlandish twist and turn just as much as we loved writing about them... Yes you did. You're no better than us!

Of course, Bieber took a paternity test (under "very controlled circumstances") and it turned out he wasn't the father, which honestly felt like a bit of a cheat. When another fan accused the Biebs of leaving her with child last month nobody really cared, so it seems the only way we'll be able to recapture that magic is if the 'Baby' star actually does have... well, a baby. Also, maybe being forced to take on a bit of responsibility will put an end to his recent bad behaviour.

Mollie King and Vanessa White from The Saturdays

Are you in that place where it feels like everyone around you is getting on with their lives and having babies and you're just... not? Well, imagine being in that situation, only instead of being bombarded with pictures of your friends and their newborns on Facebook, the happy families are staring back at you every time you flick through a magazine or surf the web or turn on a TV screen.

That's what Mollie King and Vanessa White are going through right now after bandmates Una Healy and Rochelle Wiseman had kids with their respective husbands Ben Foden and Marvin Humes, before Frankie Sandford announced her engagement to Wayne Bridge and her pregnancy. Now of course we're not trying to suggest that Mollie and Vanessa are anything other than ecstatic for their bezzies, and we're sure they're too busy scoring number one singles to get upset about the fact they don't have toddlers crawling all over them with sticky fingers. All we're saying is, it would be nice for The Saturdays to have a full set.

Lady GaGa

Ok, we admit that we're mainly looking forward to Lady GaGa becoming a mum because of the amazing, weird and wonderful outfits she'd presumably dress her kiddie in. How much would a little baby love a miniature version of that snug-looking Kermit dress?

The 'Poker Face' singer looks proper loved-up with Chicago Fire star Taylor Kinney and said last year that she wants "a soccer team" of kids, so hopefully it won't be long until we see GaGa with a little monster.

Prince Harry

Like everyone else on the planet, we're all caught up in royal baby anticipation, but we're also starting to think ahead and worry about how we'll cope after Kate Middleton gives birth. Yes, there'll be the cute baby stage with the photos and the first public appearances and all that, but then what? We'll likely be sat waiting for decades for the kid's own royal wedding, royal baby and coronation.

We need another big patriotic celebration to keep us happy and occupied in the meantime - what we need is Price Harry to pick up the slack, find a girl, whisk her down the aisle at Westminster Abbey and then we can start the whole gender-guessing, bump-watching game all over again. Plus, how cute would Harry's little ginger baby be?!

Jenna-Louise Coleman and Richard Madden

WireImage

A baby with Doctor Who and Game of Thrones blood that'll blatantly inherit impeccable genes? If this couple ever become parents, we expect every single nerd across the globe to faint.

What celebrities are you waiting to see become parents? Leave your comments below!

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