Whether you're best friends or drive each other up the wall, the relationships we have with our siblings can be some of the most formative of our lives.

On this episode of Now or Never, meet brothers and sisters who are facing a life-changing moment right now, and how their siblings are helping them through.

Rowan Moir is only 14 days old, but he already has two big brothers looking out for him. Five-year-old Dax and two-year-old Hayes share what they love about their baby brother (hint: "He has 78 hairs").

20-somethings Amreen and Swarndeep Gill learn how to live under the same roof together again, while also making viral TikToK videos together.

And Monika MacLaren is helping her terminally ill sister Barb record every last detail of her life, so her children will know about the amazing and adventurous life she's led.

Plus, Ify's sister Chisom Chiwetelu and Trevor's brother Kyle Dineen spill the beans on what it was like growing up with the future CBC Radio hosts.