The family spent time at Stack Square for the television series special
The largest of three families who took part in a television series where they were transported back to life in a 1927 mining community has expanded again.
Stephanie and Richie Phillips, from Cowbridge, in the Vale of Glamorgan, have announced the birth of their daughter, Megan, at the weekend.
The couple and their six other children took part in BBC Wales' Coal House.
Mrs Phillips, who was pregnant during last year's series, said baby Megan would "definitely be her last".
The baby arrived on Saturday two weeks late and weighing 7lb 9oz.
"She's as good as gold," said busy mother Mrs Phillips, now back home with the family in Cowbridge.
Daniel, Rhodri, and Katie Phillips welcome new sister Megan
"She's fantastic, she's just another member of the family. The other children didn't bat an eyelid."
The family was one of three who took part in the series where they were taken back to what life was like in a south Wales mining community in 1927.
All eight members of the family were forced to live in a two-up-two down cottage in Stack Square, Blaenavon - which is now part of a world heritage site.
The members of the Phillips family who took part in the programme were Jade, then aged 16, Ryan, 14, Daniel, eight, Katie, eight, Rhodri, two and Gwennan, the previous baby who was then just one.
Mrs Phillips said she had a "vague inkling" she might be pregnant before going into the Coal House but did not want to reveal her news too early.
"I didn't really know if I was pregnant or not," said Mrs Phillips. "It was not something on my mind."
"I don't think it made any difference anyway, maybe made me a little bit more emotional, that's all."
The family fast became favourite's of the show due to two-year-old Rhodri's amusing reflections on life.
The new series of the Coal House will see a selection of families living life as it would have been in 1944. It will be screened in October.