Available now, Living HD runs a high definition simulcast of the Living channel, which was recently acquired by Sky as part of its £160m deal for the Living TV Group.
Upcoming highlights on Living HD include the live final of Britain's Next Top Model on October 4, a new series of Nikita and Four Weddings spinoff Party Wars, along with channel favourites CSI, Ghost Whisperer and Grey's Anatomy.
The launch of Living HD marks the 50th HD channel to be confirmed for carriage on Sky, following recent announcements about UKTV's Good Food HD and Eden HD, along with ITV's first pay-TV channels for HD version of ITV2, ITV3 and ITV4.
Sky's HD customer base has now passed the three million subscriber landmark, representing more than 30% of its total TV base.
In the three months to June 30, Sky increased its HD customer base by 429,000 subscribers, bringing the twelve-month cumulative growth to 1.6 million.
In June, Sky+ HD also recorded 200 million HD content views, representing a more than threefold increase on the same month in 2009.
Sky+ HD customers on the top tier TV pack will also be able to watch the Sky 3D channel when it launches to residential subscribers on October 1.
"Sky recognised the potential of HD early and we are delighted it has grown into something which our customers utterly love and now demand as standard," said Sophie Turner Laing, Sky's managing director entertainment, news and broadcast operations.
"Adding Living HD to our great range of high-quality HD channels only adds to the choice that more than three million homes enjoy.
"In maintaining our leadership, we look forward to offering our customers even more choice of HD as well as new innovations such as Sky 3D and Anytime+. With so much brilliant content coupled with ground breaking innovation, it’s no wonder that we've seen such strong growth in HD."
Living TV Group managing director Jonathan Webb added: "Living is home to some of the glossiest UK and US programmes on television, and they deserve to be seen in their pin-sharp HD glory.
"With so much great content still to come in 2010 and into 2011, we're delighted to be bringing Living HD to Sky's three million subscribers."