Britney Spears on Friday reflected on what she felt after her wedding day with Sam Asghari, revealing that she experienced a "panic attack" during her special day.

The pop star took to Instagram on Friday to share what she processed after she said "I do" to Asghari, pairing her caption with a few snaps from the event, the Daily Mail reported.

A post shared by instagram

 "It was the most spectacular day !!! I was so nervous all morning but then at 2:00 pm it really hit me ... WE'RE GETTING MARRIED!!! I had a panic attack and then got it together," the "Oops I Did It Again" singer shared.

The pop star went on to say that their wedding ceremony was a "dream and the party was even better."

She then mentioned some of the notable guests who came to her wedding day.

"So many incredible people came to our wedding and I'm still in shock!!! @drewbarrymore my girl crush and @selenagomez who btw is way prettier in person if that's possible both came !!! I was speechless ... I kissed @madonna again and we danced into the night with @ParisHilton," Britney said.

The "Toxic" singer then thanked Donatella Versace for making her dress and Charlotte Tilbury, Sofia Tilbury, and Stephanie Gottlieb for her makeup and jewelry on her special day.

"I think we all fell on the dance floor at least 2 times !!! I mean come on ... we were all VOGUING," Spears said, ending her post with an "I Love You" to her husband, Sam Asghari.

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Britney Spears' Sister 'Subtly' Support Her Wedding

Britney Spears' sister, Jamie Lynn Spears was not in attendance during the pop star's wedding, but she seemed to have quietly weighed on her sister's marriage.

According to E! News, the pop star's sister liked one of the outlet's recent Instagram posts about Britney and Sam's special day.

The post that Jamie liked featured an image of Selena Gomez, Drew Barrymore, and Britney Spears hugging and laughing with one another on the dance floor.

A source told the outlet that Spear's family, including her parents, were not invited to the occasion.

It can be recalled that Britney and her older sister have had a rocky relationship since the release of Jamie's memoir last January, entitled "Things I Should Have Said."

Britney Spears and Sam Asghari Take Legal Action Against Pop Star's Ex-Husband

An emergency protective order was granted to Britney and Sam on Friday after the singer's ex-husband, Jason Alexander, gate-crashed her wedding in Los Angeles.

According to court documents, Alexander must stay at least 100 yards away from the couple as well as the singer's Los Angeles home until the order expires on June 17.

It can be recalled that an Instagram Live that was screen recorded by netizens showed that Britney's ex-husband arrived at the venue and told a worker that he was there to crash the wedding.

People were reportedly setting up the ceremony at that time.

Alexander was then arrested in the wedding venue on Thursday. Britney Spears' ex-husband was then charged with trespassing, vandalism, and battery.

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Written By: Joshua Summers

WATCH: Inside Britney Spears and Sam Asghari's Wedding: EXCLUSIVE PHOTOS! - From E! News