A man is due to appear in court accused of a double murder in a busy shopping street.
Andrew Saunders is charged with killing Matalan workers Zoe Morgan, 21 and Lee Simmons, 33, who were stabbed in Queen Street, Cardiff - close to their workplace - on Wednesday.
Saunders, 20, from Castleton in Gwent, is set to appear at the city's magistrates' court on Friday, having been charged with their murders on Thursday.
Miss Morgan's family paid tribute to "a beautiful daughter, sister, granddaughter and auntie who had a heart of gold and would do anything for anybody".
They said: "She was taken away from us tragically, too soon, and has left a massive hole in our lives that will never be filled. Zoe will always be in our hearts forever and always. We are all brokenhearted."
The bodies of window dresser Ms Morgan, of Llandaff North, and shop assistant Mr Simmons, of Grangetown, were discovered at 5.50am on Wednesday.
Colleagues broke down in tears on Thursday, their first day back at work since the double tragedy.
More than 24 hours from the deaths, there remained a sense of shock and disbelief that a young couple lost their lives on one Britain's busiest shopping streets.
Hundreds of pounds have been donated to a JustGiving page in memory of Miss Morgan, describing her as "fun, sweet and exceptionally kind and honest".
She had recently graduated from the University of South Wales in June with an honours degree in fashion marketing and retail design.
It is believed Miss Morgan and Mr Simmons had been dating for four months and struck up a romance while working together.