Tila Tequila Tila Tequila

Tila Tequila says she's expecting a baby, but not her own.

"BIG ANNOUNCEMENT: I am going to become a SURROGATE MOTHER for my brother & his Wife!!! That is my xmas present to them. Im pregnant!!!!" the MTV reality star tweeted on Sunday.

Tila Tequila engaged to Johnson & Johnson heiress

Earlier, Tequila, 28, hinted at the news on Twitter saying, "CAN U GUESS WHAT I AM GOING TO GIVE HIM FOR CHRISTMAS?? THIS WILL CHANGE HIS LIFE & MINE FOREVER!!!!!"

The Shot at Love star, whose real name is Tina Nguyen, announced her engagement to Johnson & Johnson heiress Casey Johnson earlier this month.

Tequila's rep did not immediately respond to a request for comment.