LOS ANGELES (AP) - "No Strings Attached" opened at No. 1 at the box office this weekend, grossing $19.7 million, according to final studio numbers Monday.
That's down slightly from the $20.3 million distributor Paramount Pictures estimated the film made Sunday.
Ashton Kutcher and Natalie Portman star as "friends with benefits," who try to maintain a purely sexual relationship even as they discover they're falling in love with each other.
Last week's top movie, the Columbia Pictures action-comedy "The Green Hornet," dropped to second place with $17.7 million. It's now made just over $63 million in its first two weeks.
The top 20 movies at U.S. and Canadian theaters Friday through Sunday, followed by distribution studio, gross, number of theater locations, average receipts per location, total gross and number of weeks in release, as compiled Monday by Hollywood.com are:
"No Strings Attached," Paramount, $19,652,921, 3,018 locations, $6,512 average, $19,652,921, one week.
"The Green Hornet," Columbia, $17,677,565, 3,584 locations, $4,932 average, $63,018,808, two weeks.
"The Dilemma," Universal, $9,108,890, 2,943 locations, $3,095 average, $32,746,225, two weeks.
"The King's Speech," Weinstein Co., $7,854,910, 1,680 locations, $4,676 average, $57,313,881, nine weeks.
"True Grit," Paramount, $7,330,092, 3,464 locations, $2,116 average, $137,963,519, five weeks.
"Black Swan," Fox Searchlight, $5,869,744, 2,407 locations, $2,439 average, $83,250,375, eight weeks.
"Little Fockers," Universal, $4,320,090, 2,979 locations, $1,450 average, $141,111,705, five weeks.
"The Fighter," Paramount, $4,164,504, 2,275 locations, $1,831 average, $72,680,740, seven weeks.
"Yogi Bear," Warner Bros., $3,819,395, 2,510 locations, $1,522 average, $88,649,598, six weeks.
"Tron: Legacy," Disney, $3,647,121, 2,018 locations, $1,807 average, $163,206,611, six weeks.
"Tangled," Disney, $3,081,926, 1,860 locations, $1,657 average, $186,356,425, nine weeks.
"Season of the Witch," Relativity Media, $2,297,299, 2,307 locations, $996 average, $22,189,331, three weeks.
"Country Strong," Sony Screen Gems, $2,082,688, 1,441 locations, $1,445 average, $16,845,052, five weeks.
"The Chronicles of Narnia: The Voyage of the Dawn Treader," Fox, $1,353,936, 1,135 locations, $1,193 average, $100,620,366, seven weeks.
"The Way Back," Newmarket Films, $1,208,196, 678 locations, $1,782 average, $1,208,196, one week.
"Gulliver's Travels," Fox, $1,159,012, 1,100 locations, $1,054 average, $40,021,613, five weeks.
"Harry Potter and the Deathly Hallows Part I," Warner Bros., $898,271, 725 locations, $1,239 average, $291,340,768, 10 weeks.
"The Tourist," Columbia, $881,114, 875 locations, $1,007 average, $65,894,031, seven weeks.
"Blue Valentine," Weinstein Co., $877,815, 242 locations, $3,627 average, $4,460,022, four weeks.
"The Company Men," Weinstein Co., $647,797, 106 locations, $6,111 average, $690,934, one week.
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Universal Pictures and Focus Features are owned by NBC Universal, a unit of General Electric Co.; Sony Pictures, Sony Screen Gems and Sony Pictures Classics are units of Sony Corp.; Paramount and Paramount Vantage are divisions of Viacom Inc.; Disney's parent is The Walt Disney Co.; Miramax is a division of The Walt Disney Co.; 20th Century Fox, Fox Searchlight Pictures and Fox Atomic are owned by News Corp.; Warner Bros. and New Line are units of Time Warner Inc.; MGM is owned by a consortium of Providence Equity Partners, Texas Pacific Group, Sony Corp., Comcast Corp., DLJ Merchant Banking Partners and Quadrangle Group; Lionsgate is owned by Lions Gate Entertainment Corp.; IFC Films is owned by Rainbow Media Holdings, a subsidiary of Cablevision Systems Corp.; Rogue Pictures is owned by Relativity Media LLC; Overture Films is a subsidiary of Liberty Media Corp.