Maura Derrane has shared a sweet snap of her rarely seen son Cal as he went back to school this week. The RTE star's son hit a milestone as he started fourth class. Maura took to Instagram to share an adorable selfie of both of them smiling as she sent him off to school.

Read more: Elaine Crowley bravely opens up about the grief of losing her 11-year-old nephew Read more: Fair City star Sorcha Furlong found onscreen son Junior's cancer very emotional as a mother "All grown up! Can’t believe Cal is starting fourth class. He’s nearly as tall as me!" she captioned the photo. Maura's followers couldn't believe how quickly time has flown either, with one person writing: "Time goes by so quickly Maura, enjoy the now.

" "Awww you Guys!!! Fourth Class wowsers how did that happen all of a sudden!!! Good Luck Cal," wrote another. A third said: "Handsome boy, image of you. Enjoy every minute .

. it goes so fast." "So handsome.

Have a great school year Cal. Looks like you Maura," another agreed. A fifth gushed: "Beautiful photos.

. Maura Cal is the image of you [heart emoji] Time is going too fast..

" Maura doesn't often share photos of her son Cal, who she shares with husband John Deasy. She has admitted that having Cal at the age of 44 attracted some "hilarious" comments. "It was almost like I was the first person ever to be having a child at the age of 44," the RTE broadcaster said.

"My son is now 10. I found [the commentary] hilarious. I should have had three more, considering it see.