Dr Chris Brown's ex-girlfriend Brooke Meredith is pregnant with her first child, with a due date of early next year.

The 34-year-old glamorous model, who dated the celebrity veterinarian from 2020 - 2022, confirmed the exciting news on social media on Monday night.

Brooke shared a photo of her ultrasound picture tied to a Christmas tree and made an exciting announcement in the caption.

'Six months of loving you. A lifetime to come. Our greatest blessing yet,' Brooke wrote and added a love heart emoji.

She did not reveal who the baby's father is.

Many of Brooke's celebrity friends took to the comments section to offer their well wishes.

'Oh congratulations lovely!' wrote fellow model Olivia Molly Rogers. 

'Congratulations my love!!!' added Balinese princess Lindy Klim.

'So so special! Very excited for you both,' Elyse Knowles chimed in. 

Tee Smyth, Laura Dundovic and Jess King also joined in the chorus, offering words of congratulations.

Brooke dated Dr Chris Brown, 48, for two years from 2020 - 2022.

The pair did not publicly announce their breakup. 

Reports of their split only became known when Chris publicly confirmed he was once again single. 

He is currently dating Brisbane-based Channel Ten publicist Lorraine Monforte, with the pair confirming their relationship in September.

They are keeping their relationship offline for now, despite it being an open secret.

Before this, Chris dated former Ten presenter Liv Phyland for about a year.

They were photographed together but never walked a red carpet.

Prior to Phyland, he was in a relationship with Channel Nine producer Kendall Bora from 2016 to 2018. 

Bora is now married to former Weekend Sunrise star Matt Doran.

His other exes include Bondi project manager Hannah Thomas and Home and Away actress Kassandra Clementi.