If there's one thing we love in life, it's a close-knit celebrity dynasty.

And Blake Lively's is right up there with the best of them. The Gossip Girl star is the youngest of five siblings, all of whom are actors in their own right.

You may recall her frequently hitting the red carpet with one of her older half-sisters, Robyn Lively, of Teen Witch fame. However what you possibly don't know — as flagged by Teen Vogue this week — is that Blake's brother-in-law is Coach Bolton in High School Musical.

MORE: Ryan Reynolds and Blake Lively's Rarely Seen Daughters Attend Their Father's Hollywood Walk of Fame Ceremony

Bart is married to Robyn — the pair has three kids together — and has a brilliant relationship with his famous sister-in-law, and her husband Ryan Reynolds.

View this post on Instagram

With my sister and bestest friend @blakelively at the Hollywood Walk Of Fame for an EPIC honoring of the hard work and dedication, vision, tenacity and success of a truly great man Mr. Ryan Reynolds @vancityreynolds who will forever be immortalized on Hollywood Blvd with official icon status. I think most young actors that comes to Hollywood with nothing but a dream and a few pennies in their pocket, seem to makes their way to this historic landmark and marvels at the legends that have come before them. Ryan, today you are one of the legends and forever recognized at this historic landmark. And that's dang cool! Congrats bro. You deserve this. #legend #deadpool #mybrotherinlawiscoolerthanyourbroyehrinlaw #littlesisterlegittoo

A post shared by Bart Johnson (@bart_johnson) on

Last year, Bart posted the above photo to Instagram, as Ryan was honored on the at the Hollywood Walk of Fame. Bart referred to Blake as "my sister and bestest friend" and Ryan as "a truly great man."

MORE: Pregnant Blake Lively Shares a Bikini Shot With Her “Sister Wives”

Robyn is also very close to her younger sister and brother-in-law and is clearly bursting with pride over their parenting skills (Ryan and Blake have two young children, Ines and James, together). Earlier this year, she waxed lyrical about them in an interview with E! Online.

"They're so great, and they protect their little family and they're normal," Robyn said. "Their family is everything and I'm so proud of them. They kept their sense of normality and that's amazing."

We just love the idea of Blake, Ryan, Robyn, and Bart hanging out together with their five kids for a lazy Californian BBQ.

This is the stuff that families are made of, celebrity or not.

This article originally appeared on Grazia.

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