Heartwarming: Conor McGregor and his fiancée Dee Devlin have given their followers a glimpse into their sons’ joint birthday party in southern France

In the cover image, the family-of-five beamed from ear-to-ear, with Irishman Conor, 33, looking every inch the proud father and husband.

In another snap, birthday boy Conor Jr appeared on cloud nine as he prepared to have a go on a bouncy castle.

While Croia looked content having her face painted to match her pretty dress, her dad swept little Rían up in his arms for a candid snap.

Mother-of-three Dee, who also hails from Ireland, penned the celebratory album: ‘The best weekend celebrating our two boys birthdays!

Family: The MMA star and his bride-to-be share two sons, five-year-old Conor Jr, who was born on May 6, and 11-month-old Rían, who will turn one next week. They also have a daughter Croia, three

‘We love you beyond words’: The couple looked on cloud nine as they posed for snaps with their brood

Proud parents: The MMA star  and his bride-to-be share Conor Jr, who was born on May 6, and 11-month-old Rían, who will turn one next week

‘Happy 5th birthday Conor Jr and happy 1st birthday baby Rían! We love you beyond words ❤️[sic]’.

Her fiancé left a string of hearts in reply, as fans sent their respective birthday wishes to the boys.

Conor later shared several snaps from the day himself and wrote: ‘I feel like the richest man alive and it has nothing to do with money’.

Grateful: Conor later shared several snaps from the day himself and wrote: ‘I feel like the richest man alive and it has nothing to do with money’

Couple: Conor shared a loved-up snap of himself and Dee at the celebrations

Style: Dee looked sensational in a floral long-sleeved midi dress which she wore with green open-toed heels

Birthday: Dee shared an adorable snap of the couple’s oldest son Conor Jr

Heartwarming: She also shared a photo of Conor lifting Rian in the air

Stunning: Dee let her ombre locks fall loose down her shoulders and completed her look with a white necklace

Conor sported a light blue patterned shirt and matching shorts along with a pair of white trainers.

Dee looked sensational in a floral long-sleeved midi dress which she wore with green open-toed heels.

She let her ombre locks fall loose down her shoulders and completed her look with a white necklace.

Memory making: The family-of-five celebrated Conor Jr and Rían’s birthdays in southern France

Fun times: In another snap, birthday boy Conor Jr appeared on cloud nine as he prepared to have a go on a bouncy castle

Cute: While Croia looked content having her face painted to match her pretty dress, her dad swept little Rían up in his arms for a candid snap

Message: Mother-of-three Dee, who also hails from Ireland, penned the celebratory album: ‘The best weekend celebrating our two boys birthdays! [sic] Happy 5th birthday Conor Jr and happy 1st birthday baby Rían! We love you beyond words ❤️[sic]’

Response: Her fiancé left a string of hearts in reply, as fans sent their respective birthday wishes to the boys

Last week, Conor looked happier than ever with Dee and as they posed for sweet Instagram snaps on a yacht during their sun-soaked getaway.

The professional mixed martial artist showed off his muscular physique as he went shirtless while chilling out with his swimsuit-clad partner, whom he called his ‘big busty woman’.

Captioning the photos, Dee penned: ‘Mine’.

Meanwhile, Conor cheekily commented: ‘My big busty woman I love you baby what floor we on again ?

‘And which yacht. ah stop don’t stop my baby I love you so much dee I do all of this for you, for us, I hate everyone else, I love you.’

Cute: Last week, Conor looked happier than ever with Dee and as they posed for sweet Instagram snaps on a yacht during their sun-soaked getaway

Mine! Conor shielded his face from the sun with a straw sun hat, which Dee soon swiped for herself and pose with in several snaps