Selena Gomez reportedly in New York City to promote her "Revival" album, when she was spotted wearing a gorgeous black two-piece dress — a knitted, see-through top, paired with a high-slit skirt. It seemed there was one thing missing — a bra.

The annual National No Bra Day, aims to promote breast cancer awareness, and to be able to help raise money to conduct research, was celebrated on Tuesday. Gomez, apparently, decided to participate in the fete by opting not to wear the undergarment, according to TMZ.

This isn't the first time it happened. In June, Page Six showed a couple of snaps of Nick Jonas' ex-girlfriend flaunting her sexy outfits, without a bra.

In a video uploaded by the Hollywood Everywhere on YouTube, Gomez was spotted in NYC wearing a tight red bodysuit with poking nipples.

A separate video report was uploaded by Hollywood Junkiie in June, showing the 23-year-old singer walking down the streets of NYC, wearing a pair of denim shorts matched with a white bodysuit sans bra.

In early May, CDS Hollywood Insight uploaded a different video report on social media video sharing site, showing the "Good For You" singer wearing a grey, braless top, matched with a pair of denim pants.

While in NYC to promote her new album, Gomez also announced that she would be singing in the Victoria's Secret Fashion Show, which will be airing on Dec. 8, as per Mail Online.

The "Same Old Love" singer will be performing on the VS stage as one of the musical guests, along with Rihanna and The Weekend. In 2012, Gomez's ex-boyfriend, Justin Bieber, also made his appearance on the annual lingerie fashion show, where he sang "As Long As You Love Me" and "Beauty and a Beat."

Do you guys think that Selena Gomez will wear another revealing outfit in her upcoming performance at the 2015 Victoria Secret Fashion Show?