Romeo, Cruz, and Harper today sent their mum ADORABLE bday messages

She's already one of our favourite celebrity offspring... mainly because she's so darn adorable.

Now Harper Beckham has just about shot straight to the top of our cutie-pie list - by singing her famous mum a rather wonderful rendition of happy birthday. A video of the five-year-old's vocal abilities were posted this evening on woman-of-the-hour Victoria's Instragram page.

A post shared by Victoria Beckham (@victoriabeckham) on Apr 17, 2017 at 9:43am PDT

Little Miss Harper, who FYI has a delightful English accent, clicks her fingers as she sings - and afterwards blows her mum a kiss. The Spice Girl turned fashion designer marks her 43th birthday today, and earlier celebrated by popping out for lunch with the fam in upmarket Malibu (although eldest Brooklyn was absent as he's at music festival, Coachella).

A post shared by Cruz Beckham (@cruzbeckham) on Apr 17, 2017 at 9:31am PDT

The Beckhams opted to eat at Nobu - a Japanese/sushi restaurant which is a firm favourite of famous folk in California. Meanwhile, Victoria's husband of 18 years, David, shared a throwback snap of his spouse from her music days to mark the occasion.

A post shared by David Beckham (@davidbeckham) on Apr 17, 2017 at 9:43am PDT

Choosing a still from the Say You'll Be There video (famously where David first laid eyes on his future love), the former footballer wrote: "Happy birthday to An amazing mummy, wife and friend... We Love you Have a beautiful day. x" Twelve-year-old Cruz called her "the best mum ever," in his on-line bday message, but it was 14-year-old Romeo who really stole the show. "Mum, I love u so much and hope you have the best day ever!!" he said. "You are the most amazing mum and you are perfect in every way.

A post shared by Romeobeckham (@romeobeckham) on Apr 17, 2017 at 10:29am PDT

"I love how you make me laugh every day and whatever happens you always seem to be happy. I love you to the moon and back xx have the best day ever!" OK, that lad is officially gonna break more than a few hearts. Brooklyn, 18, hasn't managed to share his own message yet, but he has a few hours still and we're sure that dad David will remind him shortly if required.