Despite only being on sale for two-and-a-half days last week, Ms Verwoerd's autobiography 'When We Dance' has rocketed into the top 10 of book sales.
It currently sits at No 2 in the paperback non-fiction charts, beaten only by singer Cheryl Cole's autobiography.
While the Girls Aloud star enjoyed a full week of book sales last week, from October 21-27, the former South African ambassador was only 20 copies behind Cole after half as many days on the shelves.
The book is also No 10 in the Irish book charts covering both non-fiction and fiction categories.
According to Nielsen Bookscan, who record book sales in the Republic, 949 copies of 'When We Dance' were recently sold -- just behind the 969 sold copies of 'Cheryl', which has topped the Irish book charts in recent weeks.
Speaking to the Irish Independent, Ms Verwoerd said: "I am delighted that the men and women of Ireland are now reading the book of my life for themselves.
"I've been greatly touched by their support; whether through texts, emails or by buying the book, and I can't thank them enough," added Ms Verwoerd who is currently struggling with flu and unable to attend any promotional appearances.
Sean O'Keeffe,managing director of publishers Liberties Press, said the sales figures for 'When We Dance' were "remarkable".
"From day one Liberties Press has been proud to publish Melanie's authentic recounting of her life in this honest and open book.
" I believe her right to tell her story has been vindicated by the unprecedented interest people have shown in 'When We Dance', and we look forward to seeing next week's sales after a full week in the shops.
He added: "These remarkable figures represent only two-and-a-half days' sales for 'When We Dance'."