A bra might have been a good idea!

Kim Kardashian arrived back in L.A. after a long flight from Brazil this morning, and the reality star wore such a tight black dress for her travel day that we could see every detail of her huge nipples. The only person that should see this much of Kimmy K's assets is husband Kanye West!

The brunette beauty was in South America promoting her new fashion line for C&A, and we have to wonder if the Keeping Up with the Kardashians star consulted her idol J.Lo on design advice? "Oh, I’ve met Kim many times. She tells me all the time that I’m her idol and stories about when she used to follow me when my first album was out, and stuff like that. It’s really sweet. She’s a sweet girl, and it’s very flattering to meet any of your fans! She’s always been very open about that and it’s very flattering to me. She’s a sweetheart,” Jenny from the Block recently gushed about her new pal.

We gotta hand it to Kim for never being shy about flaunting her figure!