Los Angeles, California - Selena Gomez celebrated her 30th birthday with a reflective post and a dinner date with Taylor Swift!

On Monday evening, the Only Murders in the Building star was in a reflective mood as she looked back on her 20s, which she described as "a journey through good, hard and beautiful moments that I will never forget."

"I am someone who is still learning, but is more certain about what matters and what she wants. Someone who is grateful for every single gift and every single lesson along the way," she wrote in a lengthy Instagram caption to mark the special occasion.

The artist assured fans that she is "walking forward" and "encouraged by so many strong, empowering people around me."

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"I want to try my best to take the beautiful and the painful one day at a time and let it all make me into the very best me that I can be for myself/others/you."

But the poignant post wasn't the only way the Rare Beauty owner highlighted the milestone.

Over the weekend, Selena shared snaps of her dinner date with her longtime BFF, the one-and-only Taylor Swift!

Selena and Taylor struck adorable poses, with one pic showing the birthday girl laughing while her bestie takes a selfie of them

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"30, nerdy and worthy," she captioned the sweet reunion.

There were also shots of her stunning, pale-peach Versace gown, which featured short sleeves and delicate tulle draped across the neckline and bodice.

And that, ladies and gents, is how you step into your 30s!