We don't mean to alarm you, but Blake Lively, she of the perfect genes and princess hair, is not the only one of her kind in this world.
No. There are three of them.
You may already be aware of Robyn Lively, Blake's older half-sister who is married to Bart Johnson, aka Coach Bolton from High School Musical. It's a whole thing.
Blake, 30, and Robyn, 46, might be 16 years apart, but they are super close — Robyn often joins Blake on press tours for her films and Blake often babysits Robyn's three children.
Robyn is a star in her own right, having spent her younger years as the lead actress in hit TV series Teen Witch.
If you're a true Lively fan, you will have spotted Robyn all over Blake's Instagram and thus will already be aware of her existence.
But, ladies and gentlemen, I present to you: Lori Lively, Blake's lesser-known half-sister. Here she is on a talk show with Blake in 2011:
Like Robyn and Blake, Lori is a long-haired, long-limbed ray of human sunshine.
She's also got truckloads of talent: Lori is an acting and dialogue coach and has trained young stars including Stranger Things' Millie Bobby Brown, Pretty Little Liars' Sasha Pieterse and a whole host of Disney stars. She knows what she's doing, basically.
She's an incredibly supportive big sister, sharing all of Blake's magazine covers, movies and career wins on her Instagram page, which has nearly 30,000 followers.
Her favourite hashtags to use on shots of Blake are #everywhereigo and #actinglively. They really are a showbiz family.
Lori has red hair like sister Robyn, but her long, messy locks and wide smile are super similar to Blake's.
When you look at their mum, Elaine, it's pretty easy to see where the three sisters get their rockin' locks and ageless appearances from.
Take a dip in that gene pool and you'll emerge glowing and forever young.
The Livelys are a big bunch — in addition to Blake, Lori and Robyn there are brothers Eric and Jason, plus Robyn's kids and Blake's daughters, James and Inez.
Then, of course, you add Coach Bolton (aka Bart Johnson) and Mr Deadpool himself, Ryan Reynolds.
We'd love to be a fly on the wall at that family Christmas gathering.