She then thanked Versace designer Donatella Versace for designing her dress, adding "I felt so beautiful" and then shared some of the antics from the night: "We all fell on the dancefloor at least 2 times! I mean come on, we were all voguing!"
She ended the post with a sweet tribute to her new husband: "Sam Asghari I love you!"
The pop star didn't make any mention of her ex-husband crashing the event.
Many celebrities conveyed their well-wishes to the pop star, including Heidi Klum who said: "Congratulations you two. Wishing you lots of Love and Happiness forever."
The Hit Me Baby One More Time songstress' wedding took place at her $7 million Los Angeles mansion and was attended by a series of A-list celebrities including Paris Hilton, Madonna and Drew Barrymore.
However, only one member of her close family was invited. Father Jamie, mother Lynne and sister Jamie Lynn all missed the nuptials and both of her sons, Sean Preston, 16, and Jayden James, 15 skipped the event.
It is not yet known if the teen boys failed to receive an invitation from Spears or made their own decision not to attend the nuptials.
Spears' brother Bryan was the only family member in attendance, according to TMZ.
Spears was first romantically linked to Asghari in 2016 after meeting on the singer's Slumber Party music video. However, it wasn't until five months later that the pair got in touch again.
Asghari revealed to GQ in June "it was the humbleness that attracted me", adding: "She was very humble and she had a beautiful soul."
The pair got engaged in September after dating for five years.
