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After Anna Paquin's rep denied rumors that she was pregnant last week, the True Blood star jokes off the speculation.

See how stars hide their baby bumps.

"My uterus is really flattered that everyone cares," she told Extra at a Nylon magazine party Monday. "But sorry, no occupants."

Find out who is pregnant this summer.

Although the star -- who wore a form-fitting Herve L. Leroux dress to the event -- had blogs guessing if she was expecting when she wore a baggy dress in Beverly Hills last Wednesday.

Paquin, however, will soon get practice at being a mother.

Find out who else is walking down the aisle this year.

Her fiance, costar Stephen Moyer, 39, is dad to Lilac, 5, and Billy, 8, from prior relationships.