Geri Halliwell and Red Bull Formula One boss Christian Horner have announced their engagement - with a small notice in a national newspaper.
Former Spice Girl Geri Halliwell, who met Mr Mandela when the group played a charity concert in South Africa, has paid tribute to the late leader on Twitter.
Rip Nelson Mandela , it was a absolute honour to meet such an inspiring man , he was amazing, incredibly charming and warm.
Nelson Mandela: A life in pictures
Ginger Spice Geri Halliwell has taken the Tube 'for the first time in 17 years' and tweeted her top tips for travellers.
The artist formerly known as 'Ginger Spice' joined X Factor's cast of star judges for the first round of auditions in Liverpool today
Geri Halliwell is to return as a guest judge for the X Factor when auditions begin on Wednesday.
The former Spice Girl will attend the Liverpool audition heat as show bosses line up guest panellists to take the place of the vacant fourth judge spot.
She previously stepped in during the 2010 series and prior to that she was a judge on the ITV1 series Popstars: The Rivals - the show which created Girls Aloud.