Big Brother couple Grace Adams-Short and Mikey Dalton welcome third child together

Big Brother stars Grace Adams-Short and Mikey Dalton have announced they've welcomed their third child together.

The duo's baby - a little girl - arrived late last week and Grace, 32, took to Instagram to share the happy news with fans.

'Baby Allegra Portia Dalton ❤️born on 2.2.18 8Lbs 3 @mikeydaltonuk,' she wrote.

Grace accompanied her announcement with an adorable black and white shot of their daughter snuggled up asleep in a blanket.

The couple, who have been in a relationship for 12 years and tied the knot in 2009, are already parents to a little girl named Georgina and a boy called Spencer.

Obviously thrilled to catch a glimpse of the family's seriously cute new addition, fans rushed to congratulate the pair.

'@grace_adams_short BABE SHE IS GORGEOUS !!!!!! Her hair !!!! And love her name ! Well done hunni !!!! Congrats to you mikey Georgiana and spencer #littlesister ❤️❤️❤️❤️❤️❤️👌🏼,' said one.

Another sweetly added: 'Huge congrats to u all, she's amazing, well done!!! Xxxxxx.'

Allegra's arrival comes just weeks after Grace and Mikey announced they were expanding their family.

Last month, Grace - who met Mikey in 2006 while starring in the seventh series of Big Brother alongside Nikki Graham and Aisleyne Horgan-Wallace - revealed she'd be unlikely to make a return to reality TV now she's a mum.

'I would be boring,' Grace said during an interview on Loose Women. 'I'm talking about school runs and stuff now. No-one would want to watch me!'

Mikey, 34, went on tell the panel that his daughter had recently came home from school asking what 'Big Brothers' was. Keen to show her, he pulled up a couple of clips of himself and Grace on YouTube.

'It brought a lump in my throat. It was a really nice moment for me, she was like, "Wow, you look so young".'

Congratulations to the happy couple!