• Taylor Swift and John Legend attend The 58th GRAMMY Awards at Staples Center on February 15, 2016 in Los Angeles, California.

Taylor Swift and John Legend attend The 58th GRAMMY Awards at Staples Center on February 15, 2016 in Los Angeles, California. (Photo : Getty Images/Christopher Polk)

Calvin Harris's former girlfriend Taylor Swift made headlines after the Fourth of July not only because she was with "Thor: Ragnarok" star Tom Hiddleston during the holiday. She was seen wearing a Forever 21 bathing suit top and some people noticed that her breasts looked bigger.

This led to speculations that Swift had breast implants. However, a source told E! News that the pop star did not get a boob job as she has "always liked her breasts" and she "likes the fact she can go bra-less and have them still be perky."

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Others believe that Swift's breasts looked bigger on the Fourth of July because of her Forever 21 bathing suit top. The bikini comes with removable cups that could make the breasts of the wearer look bigger.

Swift is currently in Australia with Hiddleston, who is filming "Thor: Ragnarok." On July 9, Saturday, the latter was seen in Queensland taking off his baseball cap off while taking a break from his run, Just Jared reported.

Set to be released on Nov. 3, 2017, "Thor: Ragnarok" is being directed by Taika Waititi. With Hiddleston as Loki, the action fantasy film also stars Chris Hemsworth as Thor, Idris Elba as Heimdall, Anthony Hopkins as Odin, Jeff Goldblum as Grandmaster, Karl Urban as Skurge, Mark Ruffalo as Hulk, Cate Blanchett as Hela and Tessa Thompson as Valkyrie, among others.

The last film that featured Hiddleston was "Crimson Peak," which was released on Oct. 16, 2015. Directed by Guillermo del Toro, the horror drama film also starred Mia Wasikowska, Jessica Chastain, Charlie Hunnam, Jim Beaver, Burn Gorman, Leslie Hope, Doug Jones, Jonathan Hyde and Bruce Gray, among others.

Aside from "Thor: Ragnarok," "Kong: Skull Island" will also star Hiddleston in 2017. Among his co-stars in the action fantasy film directed by Jordan Vogt-Roberts are Samuel L. Jackson, Brie Larson, John C. Reilly, Toby Kebbell, John Goodman and Corey Hawkins.

One day before Swift and Hiddleston arrived in Australia, Harris released a new song titled "Ole." It is rumored to be a breakup song about his relationship with Swift but sources are denying the speculations.

Watch the music video of Swift's "Wildest Dreams" here: