Liam Payne's sister felt "immeasurable pride" after seeing her late brother in Building the Band.

The One Direction singer - who tragically died aged 31 last year after falling from a hotel balcony in Argentina - features as a judge in the upcoming Netflix series and his sibling Ruth Gibbins is "heartbroken" that he won't get the chance to see himself on the programme.

Ruth posted on her Instagram Stories: "I didn't know whether to share this, but it felt weird when I've raved about Liam's work and achievements for the last 15 years.

"I'm heartbroken he never got the chance to see how great he in this show. He knew he had done a good job, we all told him this when we were at filming, but watching it back, wow!"

Gibbins continued: "You're a star Liam, you always were and always will be. There are a range of emotions I felt watching this, but one of the main ones is immeasurable pride, always. Miss you more every day."

Building the Band premieres on Netflix on July 9 and host AJ McLean has promised that the series is "unlike anything you have ever seen before".

The Backstreet Boys singer said last month: "Today's most talented singers in the world will audition for each other and choose their own bandmates before ever seeing them.

"Our judge and mentor Nicole Scherzinger, and guest judges Kelly Rowland and the late Liam Payne, are from some of the biggest bands of all time. This show is all about one word: chemistry. And believe me: in a band, you really need some good chemistry."

Liam had completed filming for the show - which features singers looking to build a band despite being kept in separate booths so they can't see each other - several months before his passing last October.

A synopsis for the series explains: "All they [the contestants] have to go on is musical compatibility, connection, chemistry and merit ... with incredible performances, compelling drama, and one big goal - to find the next great music band - the stage is set for an unforgettable experience."

Meanwhile, Liam's friend DJ Fat Tony revealed recently that he tried to "help" the star with his addiction "demons".

The 59-year-old musician - a recovering addict who has been sober for 18 years - told The Times Magazine: "I tried to help Liam Payne with his demons. He was incredible -- a really close friend.

"There were so many amazing times where he got clean and sober. Not everyone makes it. It's a real shame what happened, falling off the balcony. I'm devastated by it.

"Addiction is a big part of our industry. People see being sober and clean as more problematic than being drunk and high. They'll help you on that drink and drug journey, but not on the sober journey."