Saira, who rose to fame after her appearance on The Apprentice and is now a regular Loose Women panellist, is already biological mum to eight-year-old son Zac, who was born through IVF, and adoptive mother to her daughter Amara, five.
The star has spoken to Hello! magazine about their plans to add to their family and adopt a toddler, following urges from their children.
Saira, 46, suffers with endometriosis and went through IVF to get pregnant with son Zac. When the couple's second attempt to conceive failed, they began the adoption process in the UK before deciding to adopt abroad.
The Celebrity Big Brother star - who's said in the past that adoption can be 'addictive' - now says that after pressure from Zac and Amara, they'll begin the process again.
Saira with her husband Steve during an appearance on Loose Women
'Zac and Amara keep asking for a little brother of sister so next time, we'll adopt a toddler. Our family means the world to us and we've got so much more love to give,' she said.
The mum of two has been open about her experience of the adoption process. In 2011, she and Steve filmed a BBC documentary showing their journey to adopt Amara from Karachi, Pakistan, where they travelled to the Edhi Foundation Orphanage.
Speaking about their decision to adopt abroad to New Day, Saira revealed: 'Being a parent is being a parent. We adopted overseas because we were advised there needed to be a two-year gap between Zac and the child we were going to adopt.
'We were told it wouldn't be possible to get a child in the time frame we were looking at in Britain so we went to Pakistan.'
Her daughter Amara was sadly abandoned in an orphanage's doorway as a newborn, meaning Saira and Steve have little hope of finding out more about her heritage - something that is common for families adopting in Pakistan.
'Her real mum might well assume she's dead. It's so commonplace in Pakistan, especially for unwanted baby girls,' Saira added.