Blac Chyna showed off her ''unconditional love'' for her children as she shared a sweet family portrait.

The 28-year-old model uploaded a photograph of herself posing with her eldest child King Cairo - who she has with her ex Tyga - and her two-month-old daughter Dream Renée, who she shares with her fiancé Rob Kardashian.

Captioning the image on Instagram, she simply wrote: ''Unconditional love.''

However, Rob, 29, was noticeably absent from the picture despite the pair having rekindled their romance over the Christmas and New Year period.

Meanwhile, it was previously revealed that the 'Rob and Chyna' stars have been working on their weight loss together.

A source said: ''Rob is starting to get active again with the help of Chyna. Rob and Chyna have been taking more hikes together lately so that's been a positive step forward ...

''She is definitely making progress [with her post-baby body], slowly, so she's happy with any progress. She wants her tiny waist back how it looked before Dream. So when she gets there she'll be happy.''

And Chyna has a ''good relationship'' with Rob's mother Kris Jenner as they share a common interest in making sure Rob is ''healthy and happy''.

An insider added: ''Chy and Kris have a good relationship. If she needs to vent or get advice she will call Kris and they talk it out. Both just want Rob to be healthy and happy.''

The couple are still working hard on their relationship and Kris recently admitted their relationship is still a ''work in progress''.

Speaking about the pair - who got engaged after four months of dating - she explained: ''You know, I think that, too, is a work in progress and they have good and bad days. It's a young relationship and they haven't known each other for that long.''