Naya Rivera is looking quite busty these days.

Yesterday, Rivera posted a picture onto her Instagram of her and her fiancé, Big Sean, at the beach. Her breasts look suspiciously large in her small black bikini. As a result, some fans started speculating that the 27-year-old got breast implants.

"the photo, she has new boobs baby," a user with the name noeliamedinad commented.

"Omg!!! No! Boob job nooo! :O You're perfect!" immerli_gleek added.

According to E! News sources, however, Rivera remains au natural. According to the website, an "insider" claims that Rivera did not get breast augmentation "100 percent." The source says that Rivera's surprising curves are the result of nothing more than "a very padded bikini bra top," E! News reports.

Yesterday, Glee aired its 100th episode.

"'Being a part of something special makes you special'. Glee has and continues to be one of the most special journeys in my life," Rivera said via Twitter. "Thank you to the fans, crew, producers, directors, 20th, and most importantly the cast for making these 100 episodes truly magical. Enjoy!"

As Glee moves on to New York City, Rivera fans have feared that her character, Santana Lopez, would not be on the show for the rest of season 5 or season 6, the show's last. According to E! News, however, Santana will miss a few episodes but will return, and Glee writers are working on "major story arcs" for her in New York.

Another character is not staying until the end, however.

"...at least one actor who has been a series since season the very beginning isn't expected to stay a regular for season six," E! News reports. "This character is graduating from McKinley High, soon, and will be seen from time to time, but no longer as a full-time cast member."

Brad Falchuk, Glee executive producer, has previously described season 6 as a "comeback."

Season 6 of Glee begins this fall.

Follow Scharon Harding on Twitter: @SH____4.