Peter Andre and Emily MacDonagh are throwing a 'Thomas The Tank Engine' themed birthday for their son Theo.

The 44-year-old singer and his 28-year-old spouse are celebrating their youngest child's first birthday on November 22 with a bash inspired by the beloved talking steam locomotive.

And the couple - who also have three-year-old daughter Amelia together - have purchased a cake and balloons inspired by the TV show and books, and they have also arranged for a soft play area to be put up inside their home.

Speaking about the party plans in her column for OK! magazine, Emily spilled: ''It's Theo's birthday this week - I can't believe he's one already. To celebrate we're having a family thing at home with a 'Thomas the Tank Engine' theme. We've got a cake, balloons, and I've organised for some soft play to be brought to the house.''

The pair are also treating the tiny tot to a tricycle, although he is unlikely to be able to ride it because he is still struggling to walk on his own.

She said: ''We've bought him a little trike - I was so sure he'd be walking by his first birthday, but he is nearly there. I think he is just being a bit lazy.''

But Theo is not the only member of the Andre family who are being spoilt, as the 'Mysterious Girl' hitmaker - who also has daughter Princess, 10, and son Junior, 12, with his ex-wife Katie Price - is planning to buy a Harley Davidson motorbike for himself.

Emily said: ''Pete and I were pictured shopping for motorbikes at Harley Davidson last week. He took one for a test drive and he bought some biker boots, so I think he'll probably get himself one.''

And the dark-haired hunk is contemplating purchasing a chopper for Emily too.

She continued: ''They're very nice and Pete says he may treat me to one when the time is right, although I'm not expecting there to be one on the drive on Christmas Day.''

But Emily is not adverse to motorbikes, as she used to whizz along on a scooter before she became a mother, although she would like to have more driving lessons before she took on two wheels again.

She said: ''I used to drive a scooter until I became pregnant with Millie. I never used to worry about driving around by now I've got kids I'd have to think about it really carefully. I wouldn't even consider riding a bike now without loads of lessons, and even then I'd be very cautious about it.''