Teen lock Tuilagi called up by France for Ireland Six Nations Test
Tuilagi replaces fellow lock Romain Taofifenua on the bench, the latter ruled out with sickness.
The 19-year-old Tuilagi, born in Samoa, represented France at the under-20s World Cup last year.
He is the son of former Samoa international and Perpignan player Henry Tuilagi, with whom he moved as a three-year-old to England when he signed for Leicester.
Henry Tuilagi later settled in Perpignan after hanging up his boots.
Posolo Tuilagi is also the nephew of England centre Manu Tuilagi and former Samoa internationals Freddie, Alesana, Anitelea and Sanele Vavae Tuilagi.
Teams (15-1)
France
Thomas Ramos; Damian Penaud, Gael Fickou, Jonathan Danty, Yoram Moefana; Matthieu Jalibert, Maxime Lucu; Gregory Alldritt (capt), Charles Ollivon, Francois Cros; Paul Willemse, Paul Gabrillagues; Uini Atonio, Peato Mauvaka, Cyril Baille
Replacements: Julien Marchand, Reda Wardi, Dorian Aldegheri, Cameron Woki, Posolo Tuilagi, Paul Boudehent, Nolann Le Garrec, Louis Bielle-Biarrey
Coach: Fabien Galthie (FRA)
Ireland
Hugo Keenan; Calvin Nash, Robbie Henshaw, Bundee Aki, James Lowe; Jack Crowley, Jamison Gibson-Park; Caelan Doris, Josh van der Flier, Peter O'Mahony (capt); Tadhg Beirne, Joe McCarthy; Tadhg Furlong, Dan Sheehan, Andrew Porter
Replacements: Ronan Kelleher, Cian Healy, Finlay Bealham, James Ryan, Ryan Baird, Jack Conan, Conor Murray, Ciaran Frawley
Coach: Andy Farrell (ENG)
Referee: Karl Dickson (ENG)
