• Gerry and Kate will remember Maddie during 13th birthday for Sean and Amelie
   

• The pair both aspiring athletes, will be surrounded by loved ones for milestone
   

• A guest revealed how the twins' 'only wish is for their big sister to come home'
   

• Maddie, 3, vanished from a holiday apartment in Praia da Luz, Portugal, in 2007

Madeleine McCann's parents will celebrate with family and friends as their twins become teenagers a decade after their daughter went missing.   
 

Gerry and Kate will remember Maddie with prayers during a joint 13th birthday for her siblings Sean and Amelie. 
 

The pair, who are both aspiring athletes, will be surrounded by loved ones for the milestone, while a guest said 'their only wish is for their big sister to come home'.
 

One guest said: 'There will be prayers to remember Madeleine as well wherever she is.

'Kate and Gerry want to give the twins a memorable occasion, they're teenagers now and that's a big deal. 

'But the party will be marred with a tinge of sadness because Madeleine is not here to join in the fun.' 

Three-year-old Maddie vanished from a Portuguese holiday apartment nearly 11 years ago.

British police continue to search for her and have nor ruled out the possibility of finding her alive despite failing to unearth any new clues. She would now be aged 14. 

Her parents are bravely trying to mark the double birthdays in 'as normal way as possible' for the sake of the twins. 

Former GP Kate, now a medical worker, has previously told how the family often pray for Maddie's safe return and always remember her on key occasions. 

She said her twins have 'grown up essentially without Madeleine but knowing their sister is missing and they want her back.'

The anguished mum, speaking in the past to promote her charity Missing People of which she is an ambassador, added: 'They have their own friends and they keep busy and they're really sporty but their only wish is for their big sister to come home. We miss our complete family of five.'

'As a family 98 per cent of the time we're busy. I don't know if that's a conscious thing but it helps. The urge to look for Madeleine absolutely hasn't changed at all.'

Kate and renowned heart doctor Gerry, both 49, of Rothley, Leics, celebrate their own milestone 50th birthdays this spring.

Sean and Amelie attend a Catholic secondary school in nearby Loughborough which still holds a place for their big sister and hopes one day to welcome her as a pupil.

Scotland Yard detectives have two months left of guaranteed Home Office funding to continue their painstaking search for Maddie.

She disappeared, feared snatched by a child trafficker, sex predator or during a bungled burglary at her family's holiday flat in pretty nAlgarve resort of Praia da Luz in May 2007.

At the time she had been left sleeping alone with her toddler siblings while her parents were dining in a nearby tapas restaurant with pals.