Bullock's contribution matches those by George Clooney and Brad Pitt and Angelina Jolie, reports Variety. The trade paper also notes that Gisele Bündchen has pledged $1.5 million to Haiti, while Madonna says she has given $250,000.
The gifts come as the star roster for Friday's multi-network Hope for Haiti telethon, organized and to be co-hosted by Clooney and Wyclef Jean, continues to expand. Among those set to perform now include Christina Aguilera, Bono, Alicia Keys, Sting and Justin Timberlake. Tom Cruise and Julia Roberts have already been announced as answering the phones during the telethon.
The special will air live from Los Angeles and New York at 8 p.m. ET on MTV, ABC, CBS, NBC, CNN, FOX, BET, The CW and HBO, among other networks. Donations will benefit Haiti relief efforts by the Red Cross, UNICEF, the Yele Haiti Foundation, Oxfam America and Partners in Health and be divided evenly among the groups.
On Monday, a tearful Jean defended his foundation against allegations that he profited from donations to the Yele.
Reaching Out with HelpOthers heeding the call to action include Taylor Swift and Ashley Judd, who already helped the University of Kentucky (Judd's alma mater) raise $1 million during a 4½-hour Hoops for Haiti telethon on Lexington's WKYT-TV.
U2 has also penned a song for a separate Haiti relief event being organized by Jay-Z and Swizz Beatz.
Major League Baseball also hopped on the bandwagon, pledging a $1 million starter donation. The New York Yankees came forward with $500,000, and the Toronto Blue Jay owners Rogers Communications gave $250,000 in cash and goods.
And some stars are literally giving the clothes off their backs to help the effort. Meryl Streep, Gerard Butler, Amy Poehler and Olivia Wilde are donating the outfits they wore at Sunday's Golden Globes to Artists for Peace and Justice, which will auction the outfits to the public on eBay next week.