Pop star Harry Styles was given just 2.5 hours notice to fill in as host of** The Late Late Show with James Corden**, after James' wife went into labour, and he did an amazing job.
The 'Sign of The Times' singer made a big entrance to the show with a five minute monologue which started, "No, your eyes do not deceive you – I am not James Corden. I am Harry Styles."
He then continued, “You may be wondering why I’m hosting tonight – and, yes, you are right: Donald Trump finally got sick of James’ jokes and deported him back to England.
"I am of course kidding… just half an hour ago, James and his wife Jules had a beautiful baby girl," to which the audience cheered.
Harry then went on to joke, "In fact, I was at the hospital just before coming over here, and she looks a lot like James – mainly because James looks like a giant baby."
Harry hosted the full show and also addressed THAT kiss, that was shown in the Carpool Karaoke Christmas special which was uploaded to YouTube yesterday. After showing a montage of pop stars singing 'Santa Claus is Comin' To Town', the video ended with Harry and James having a Christmas kiss, which the singer joked would result in the pair having their own baby!
You can watch the highlights of Harry's presenting below:
James announced his happy news in the early hours of the morning to his fans on Twitter saying, 'Today we welcomed a beautiful baby daughter into the world. Both she and her mother are doing great. We can’t stop smiling.'
The little girl, who has yet to be named, is a younger sister to six-year-old Max and three-year-old Carey.
Back in September James Corden revealed the gender of their baby telling press, "She’ll be arriving Christmas - we're very excited."
Continuing, "It will be great, lovely. We're having a little girl, it’s going to be terrific.
Congratulations to James and Julia.
Now see which other celebrities have welcomed babies in 2017 in our gallery below
Celebrities who've welcomed babies in 2017 - Dec (Radio)
1 of 47Alexis Ohanian and Serena Williams
2 of 47Geri & Christian Horner welcomed a baby boy called Monty
3 of 47Stephanie Davis & Jeremy McConnell welcomed a baby boy called Caben-Albi
4 of 47Janet Jackson & Wissam Al Mana welcomed a baby boy called Eissa Al Mana
5 of 47Jamie & Rebekah Vardy welcomed a baby boy called Finley Jaiden
6 of 47Billie Faiers & Greg Shephard welcomed a baby boy
7 of 47Alex Jones & Charlie Thomson welcomed a baby boy called Edward
8 of 47Pharrell Williams & Helen Lasichanh welcomed triplets
9 of 47Mel Gibson & Rosalind Ross welcomed a baby boy called Lars Gerard
10 of 47Katherine Heigl & Josh Kelley welcomed a baby boy called Joshua Jr.
11 of 47Natalie Portman & Ben Millepied welcomed a baby girl called Amalia
12 of 47Sean Paul & Jodi Stewart Henriques welcomed a baby boy called Levi Blaze
13 of 47Rochelle & Marvin Humes welcomed a baby girl called Valentina Raine
14 of 47Jessica Ennis-Hill and her husband Andy are expecting a baby
15 of 47Cheryl and Liam Payne welcomed a baby Bear in March!
16 of 47Five After Midnight's Kieran Alleyne welcomed a baby boy with his ex Sophie
17 of 47Bradley Cooper and Irina Shayk welcomed their first child together
18 of 47Benedict Cumberbatch and Sophie Hunter welcomed their second child, a baby boy
19 of 47Helen Skelton & Richie Myler welcomed their second child
20 of 47Lucy Pargeter and Rudi Coleano welcomed twin girls called Missy Mabel and Betsey Maggie in April
21 of 47Ronan Keating and his wife Storm welcomed baby Cooper in May
22 of 47Ronan Keating and his wife Storm welcomed baby Cooper in May
23 of 47Alex & Steven Gerrard welcomed their 4th child, a baby boy called Lio
24 of 47UFC star Conor McGregor & girlfriend Dee welcomed a baby boy in May
25 of 47Ciara and Russell Wilson welcomed a baby girl in April
26 of 47Kieron Richardson and his husband Carl Hyland welcomed twins, Chase and Phoebe in May
27 of 47George and Amal Clooney welcomed twins called Alexander and Ella
28 of 47MIC stars Binky & JP welcomed a baby girl in June
29 of 47Beyoncé and Jay-Z welcomed twins Rumy and Sir Carter in June
30 of 47Jason Statham and Rosie Huntington-Whiteley welcomed their first child together in June, a baby boy called Jack Oscar.
31 of 47Lauren Conrad welcomed her first child with her husband William Tell in July. She welcomed a baby boy called Liam James Tell.
32 of 47Harry and Izzy Judd welcomed a baby boy called Kit.
33 of 47Chanelle Hayes welcomed a baby boy
34 of 47Hollyoaks star Chelsee Healey welcomed a baby girl called Coco.
35 of 47Rag 'n' Bone Man and girlfriend Beth
36 of 47Danielle Lloyd welcomed a baby boy called Ronnie
37 of 47Dame Jessica Ennis-HIll welcomed a baby girl called Olivia
38 of 47Kian Egan and Jodi Albert
Former Westlife singer Kian Egan and his wife Jodi Albert welcomed their third son into the world and called him Cobi.
39 of 47Heidi and Spencer Pratt
Reality TV couple Heidi and Spencer Pratt welcomed their first child, a baby boy called Gunner Stone.
40 of 47Ferne McCann
Ferne McCann welcomed her first child into the world in November. The former TOWIE star called her daughter Sunday.
41 of 47Jake Hall and Misse Beqiri
Jake Hall and Misse Beqiri welcomed a baby girl called River into the world in November.
42 of 47Sir Andy Murray and Kim Sears
Scottish Tennis champion Sir Andy Murray and his wife Kim Sears welcomed a baby girl into the world in November. The new arrival is their second daughter.
43 of 47Cristiano Ronaldo and Georgina Rodriguez
Footballer Cristiano Ronaldo has announced the birth of his fourth child, the first with his girlfriend Georgina Rodriguez on Instagram.
44 of 47Sam Faiers and Paul Knightley
Former The Only Way Is Essex star Sam Faiers announced the birth of her second child on Instagram on the 12th November.
45 of 47James Corden and Julia Carey
James Corden and his wife Julia Carey welcomed their third child into the world, a baby girl.
46 of 47Nathan Massey and Cara de la Hoyde
**Love Island 2016 **winners Nathan Massey and Cara de la Hoyde welcomed a baby boy in December.
47 of 47Rachel Adedeji and Jason Finegan
Hollyoaks star Rachel Adedeji and husband Jason Finegan announced the birth of their first child, born on the 21st December.