Phillip Schofield will be flying solo on Sunday's live show.
Holly Willoughby breaks down during This Morning Ukraine discussion
The young boy travelled more than 600 miles to reach safety in Slovakia with a phone number written on his hand to reunite him with relatives.
Schofe apparently caught co-host Holly Willoughby off guard during Sunday night's live show.
About Holly Willoughby
Holly Willoughby is one of the most recognisable faces on the TV thanks to her presenting roles on 'This Morning' and 'Surprise Surprise'. She first started her presenting career alongside best mate Fearne Cotton on CBBC, before moving to to host kids Saturday morning show 'Ministry Of Mayhem' with Stephen Mulhern. But Holly soon made the leap to primetime telly, hosting 'Dancing On Ice' with Phillip Schofield, then later taking over from pal Fearne on 'The Xtra Factor'. Her biggest role came when Fern Brittion quit 'This Morning' and Holly became the new face of daytime TV with her 'DOI' co-host Phil on 2009. She's also been putting up with Keith Lemon's antics on comedy panel show 'Celebrity Juice' alongside best friend Fearne Cotton, and also co-hosted the first two series of 'The Voice UK' on BBC One with Reggie Yates. Since quitting the show, she's fronted a revived version of Cilla Black's 'Surprise Surprise', and sports panel show 'Play To The Whistle' alongside Frank Lampard and Bradley Walsh. She is also the host of new ITV dating show 'Meet The Parents'. Holly is married to TV producer Dan Baldwin, and the couple have three children - Harry, Belle and Chester.