updated 03/10/2008 AT 01:00 AM EDT
•originally published 03/10/2008 AT 01:00 AM EDT
At Alba's L.A. home, hairstylist Robert Ramos (right) transformed the mom-to-be, who later revealed her latest ultrasound—no twins!—to her glam squad.
For more on Clothes off Our Back—they auction celeb garb to raise money for children's charities—go to clothesoffourback.org.
"He said I looked really beautiful—he kept kissing me," says Alba of fiancé Cash Warren, who dug his Oscar pass too (below). "He thought he was so cool."
Alba's pre-Oscars chow with makeup artist Lauren Anderson? Turkey, avocado and (non-pregnancy-related) pickles. Postshow Alba kept it low-key. "[Cash and I] skipped the parties, put sweats on and went to In-N-Out for burgers!"