Kate Upton probably isn’t going to be wearing a teeny-tiny Halloween costume this year for the ghoulish holiday. In fact, she’s not even sure what she’s doing, the starlet told E! Online.

"I'm not sure what I'm going to do for Halloween yet, because I'm going to be working," the 21-year-old supermodel told the publication. Even though she wasn’t feeling particularly festive this year, the blonde beauty did dish about some spooky outfits she has donned in the past.

"I think my favorite costume was being a bottle of Tabasco," she revealed. "I felt like it was my most creative moment ... it was a lot of fun."

Even though Upton is arguably best known for her voluptuous curves, she explained that Oct. 31 is about much more than just showing skin. "I don't think that Halloween is about being too slutty or too sexy," she said. "I think it's about committing to your costume." Lindsay Lohan’s Cady Heron character from “Mean Girls” probably agrees with Upton.

The model is currently promoting her partnership with Gillette and Movemeber, and made sure to add that she thinks guys should definitely rock mustaches for November. "Definitely always have a mo during Movember," she said. "I think however they feel confident is how they look their best."

Upton is currently dating former “Dancing With the Stars” professional dancer Maksim Chmerkovskiy, 33. Even though the beauty might not be dressing up on Thursday, the two did attend Mike Meldman's Annual Halloween bash in Beverly Hills over the weekend, E! Online wrote, and apparently wore a Marie Antoinette-inspired costume.