14 details you might have missed in the series finale of 'Insecure'

In the series premiere, best friends Issa (Issa Rae) and Molly (Yvonne Orji) are both struggling with their insecurities in everything from work to relationships.

As the characters evolve over the course of five seasons, we watch them find their happy endings, gain confidence, and conquer those insecurities. That journey is represented in the way a memorable music moment from the pilot crops back up in the series finale.

The first episode, called "Insecure as Fuck," features the Kendrick Lamar song "Alright" in the opening scene with a montage of LA. Series showrunner Prentice Penny previously told Insider's Kim Renfro that the creators opted to just "pony up the money" to use the song in the scene, which became pricey after it became a big hit, because it "just was perfect" for the moment.

The series finale's title, "Everything Gonna Be, Okay?!," appears to connect to a lyric from "Alright": Lamar repeatedly raps "we gon' be alright."

Fans of Rae may have recognized James Bland, who previously starred in "First," a web series written by Jahmela Biggs that aired on Rae's YouTube channel, Issa Rae Presents. Bland also created and starred in "Giants," another show that got its start as a series on Issa Rae Presents before moving to the cable network Cleo TV.

Viewers will also have spotted another surprising but recognizable guest star: Taurean's brother, who shows up at Molly's birthday party, is played by "Save the Last Dance" star Sean Patrick Thomas.

Over the series' five seasons, the showrunners have tended to sprinkle in guest actors with wider cultural significance. "Save the Last Dance" is a cult favorite and one of the major films Thomas starred in, along with "Cruel Intentions."

The lyrics "Little girl be fair, show yourself you care" are from Stevie Wonder's "Girl Blue." The mantra is relevant to Issa's journey towards self-confidence, which she finally reaches in the series finale.

It looks like the long, petty feud between Quoia and Molly is officially over.

Though the two never had an actual fight, there was always unnecessary tension between them. In the finale, they come together to throw Issa a birthday party and all is good — a more subtle, but still significant, moment of growth for the characters.

Although Molly is a member of the Alpha Kappa Alpha (AKA) sorority, her bridesmaids donned red, which is one of the traditional colors for Delta Sigma Theta, another historically Black sorority. (AKA's colors, meanwhile, are salmon pink and apple green.)

Red is often said to symbolize passion and strength, characteristics we've seen in Molly all along.

Tiffany being pregnant alludes to things being better in Denver between her and Derek.

Also, she and Kelli will have playdates for their kids!

When Issa invites Lawrence for a tour of her office, he said "You went from 'We Got Y'all' to 'I got mine,'" referring back to the non-profit Issa was working for and struggling with in the beginning of the show.

Issa went from struggling at a job that wasn't fulfilling to making her own vision come to life, all while driving a Lexus – and not for Lyft either.

Issa showed how dreams take time and having faith in your vision can pay off.

While working for a non-profit, We Got Y'all, Issa struggled to be understood. Many of her ideas to help underserved students were met with resistance, but now she has the agency to call the shots with The Blocc.

Thug Yoda (Tristen J. Winger) is still at The Dunes with his daughter.

We were introduced to Thug Yoda in season one as Issa and Lawrence's neighbor at The Dunes. He's a gang member who is affectionately raising his daughter, giving advice when he can, and providing laughs.

Maverick's Flat is the venue Issa took Molly to in the pilot episode, so Issa could run into her ex, Daniel.

Though Issa and Lawrence were technically broken up at the time, that meeting became the catalyst for a tumultuous on-off relationship between Issa and Lawrence that lasted across all five seasons.

Issa drives by We Got Y'all, and her old coworkers Frieda and Sarah are outside working.

Issa often felt like an outsider due to her creative differences with the team at We Got Y'all. Now she's on the outside looking in, literally, but it's on her own terms.

The writers of "Insecure" seemingly give a nod to "Baldwin Hills," a popular BET reality show from the 2000s that focuses on Black teenagers living in Los Angeles as they navigate high school and drama.

Johnson seemingly confirmed he played the role by retweeting a user on Twitter who wrote: "Can we also acknowledge the 'Ode to Baldwin Hills" touch with @_Moriahj casually "working" for Best Buy?!?!"

Rae is no stranger to referencing Black pop culture in "Insecure," and this moment signifies that.

Best Buy was also Lawrence's first job he took as a compromise for income. He had to put his dreams of creating an app on hold and faced the reality of settling for an entry-level job.

During that time, Lawrence also met Tasha, a fling who provided Lawrence with the words of affirmation he needed at the time.

In the pilot, we are first brought into the lives of the characters on "Insecure" on Issa's birthday – which her then-boyfriend Lawrence forgets about. It becomes the catalyst for a relationship tainted by mistakes and revelations.

The series finale ending with Lawrence not only celebrating Issa's birthday and taking her out to dinner but also with them engaged is a major full-circle moment.

"Insecure" artfully shows us the growth of all the characters through their birthdays – a time of renewal and celebration.