Taylor Swift Belly Button Sets Internet on Fire, Singer Instagrams Bikini Pics During Hawaii Vacation

Taylor Swift ended the mystery involving her belly button after she posted several of her photos. She was seen wearing a two-piece swimsuit while hanging out at a beach in Hawaii with the Haim sisters.

The "Shake It Off" singer who turned 25 recently posted her photos via Instagram.

Swift wore a colorful yellow and red two-piece in one of her posted photos. Later on, she changed into a different swimsuit and was seen wearing a one-piece retro-inspired swimwear.

"Greetings from Maui! @haimtheband," said Swift as she captioned one photo that was taken with sisters Alana, Danielle and Este Haim. The pictures also showed Swift and the sisters going hiking and frolicking in the water.

Swift expressed in the past that she's not keen on showing off her belly button.

"When you start showing your belly button then you're really committing to the midriff thing. I only partially commit to the midriff thing -- you're only seeing lower rib cage," said Swift. "I don't want people to know if I have one or not ... I want that to be a mystery."

Swift's photos not only ended the "belly button" mystery but also caused frenzy over the Internet. Her bikini photos, which are described as rare, had instantly become a "trending" topic on Twitter. A number of tweeters had reportedly expressed how shocked they were after confirming the fact that Taylor Swift indeed had a belly button.

"BREAKING NEWS: @taylorswift13's belly button finally shows! Hotties btw," said Dom (@GenuGabbuat) in a tweet.

"Taylor Swift has a belly button!! It is confirmed. We can all sleep easy tonight," tweeted Jackie O (@JackieOProblems).

"This is a red alert coming directly from London at 2:30a.m. @taylorswift13 has revealed her belly button," said Caroline Ellis (@carolinagirl1324).

"Did @taylorswift13 just show her belly button?! I thought she said she was never going to show it!," said Torrey (@torreylee).

In her Instagram photos, it seemed like Swift tried to cover her belly button again either by wearing a blouse on top of her swimsuit or by changing entirely into the retro-style swimwear.

"As far as anyone knows based on my public appearances, they haven't seen evidence of a belly button," said Swift. "It could be pierced. They have no idea. If I'm going to get some sort of massive tattoo, it's going to be right next to my belly button because no one's ever going to see that."

While it is true that Swift's bikini photos -- owing to their rarity -- may come as a surprise to her legions of fans, her belly button revelation was what caused so much reaction over the Internet. Now that she's also mentioned the prospect of choosing the spot near her belly button as a future tattoo location, fans will surely be keeping a watchful eye on the next round of Taylor Swift's photos.

Here are the photos that caused frenzy over the Internet.