Credit: GSI Media

Is Louis Bullock about to become a big brother?

Not so fast. Two tabloid mags reported that Sandra Bullock was deep in the process of adopting another child -- one to join son Louis, 2, whom she adopted in early 2010.

"She has no plans to adopt at this time," a rep for the Blind Side actress, 47, tells Us Weekly.

Single since her messy 2010 divorce from Jesse James, Bullock was gushing to a pal at an Oscars afterparty Feb. 26 about her not-so-little man.

 "He's getting so big!" the star exclaimed. Pointing to her hip, she said, "He comes up to here on me now!"

One star who did have big adoption news this week? Fellow Oscar winner Charlize Theron, who announced Wednesday that she recently adopted a son named Jackson.