Daniel Neeson, son of Liam Neeson and Natasha Richardson , remembered his late mother in a moving Instagram post on Monday.

The Parent Trap actor died in 2009 after sustaining a head injury while skiing in Quebec. Richardsons sons, Michel Richardson and Daniel Neeson, were just 13 and 12 , respectively, at the time of their mothers death.

15 years since youve left this plane onto forever more, Daniel Neeson wrote, alongside a black and white photo of his mom.

I look forward to reuniting one day, but for now, I take solace in knowing youre beside me every step of the way. Hopefully, Im making you proud, he said. I think you would definitely be proud of my margarita skills. She was the OG margarita mama!

As a kid, I used to ask her for a sip of hers, and she would gently say not till youre older, he recalled, adding, Little did she know I would one day start my own tequila brand and have way too many margaritas at my finger tips.