"It Girl" is a song by American recording artist Jason Derulo, released as the second single from his second studio album, Future History on August 9, 2011.

"It Girl" was written by Jason Derulo, E. Kidd Bogart, Lindy Robbins and Emanuel "Eman" Kiriakou, who also produced the track.

[10] According to Rap-Up, the song's lyrics find Derulo as the male protagonist singing praises of "a lovely lady", comparing her to his "greatest hit".

"[12] Shetler concluded that "every element of the song works, from the sweet whistling intro to the acoustic guitar melody to the 'oh-oh-oh-oh' vocal chants after the chorus.

"[12] Similarly, Jenna Hally Rubenstein of MTV, who viewed "It Girl" as Derulo's "valiant attempt to trump his monstrous [...] hit 'Whatcha Say', gave the song a positive review, writing that it is catchy and it is "perfectly crafted for radio success".

[9] Jess Holton of The Music Network noted that the song "delivers with catchy whistling and tender lyrics" and that it "will appeal to the lady fans of Derulo who like to see the romantic side of the crooner".

[24] Robbie Daw of Idolator wrote that the song "comes dangerously close to being just another bland, cookie cutter R&B-pop experience, but lucky for him, that whistle gimmick in the chorus makes it a somewhat enjoyable three minutes.

"[25] Kyle Anderson of Entertainment Weekly awarded the song a B− rating and wrote that "perhaps [Derulo] should have pitched woo with something hotter than a flat midtempo beat, some acoustic flourishes, and a whistle garnish.

"[26] Shahryar Rizvi of Dallas Observer gave the song a mixed review, criticizing its lyrics: "[...] if you read between the lines in 'It Girl', it becomes clear that Derulo has some really weird taste in women.

"[8] Lewis Corner of Digital Spy gave the song a negative review, "with the charts now welcoming the return of the organic singer-songwriter", Derulo may not have equipped enough himself with "his own gut-wrenching ballad.

[44] In the United Kingdom, "It Girl" debuted and peaked at number four on the UK Singles Chart on September 25, 2011 – for the week ending October 1, 2011[45] – becoming Derulo's fifth top ten song in Britain.

[47] The accompanying music video for "It Girl" was directed by Colin Tilley and shot at a mansion in Malibu, sitting on a cliff overlooking the Pacific Ocean.

[4] A behind-the-scenes footage from the video shoot showed Derulo wearing different outfits, including a dark pinstripe suit with a pair of sunglasses, a rose-colored button-down shirt and white pants.

[25] The beginning of the video is shot in black-and-white, and shows Derulo sitting on the hood of a corvette outside a Malibu mansion dressed in 1920s attire.

The video then shows intercut scenes in full color of Derulo at the beach, on the mansion's balcony, and in the bedroom with his love interest (played by Tika Sumpter).

Melinda Newman of HitFix praised the concept of the video, writing: "[...] when [Derulo is not] busy showing off his dance moves, he is living the high life with his lady in their palatial estate.

"[52] Cameron Matthews of AOL Music commented that the video gives "a kaleidoscopic view" between Derulo's beachfront paradise, an assortment of "edgy suits" and "a little bit of pillow talk with his new 'It Girl'.

[55] Robbie Daw of Idolator compared his performance to Michael Jackson, writing "we're used to the 21-year-old [copying] MJ's legendary moves, especially on AGT.

[57] During an Australian promotional tour for Future History, Derulo performed "It Girl" at the Westfield shopping mall in Parramatta, New South Wales, as part of a set list which included "In My Head" and "Don't Wanna Go Home".

[60] On November 6, 2011, Derulo performed "It Girl" at the Belfast City Hall in Northern Ireland, United Kingdom to coincide with the 2011 MTV Europe Music Awards.

[65] On December 3, 2011, he performed "It Girl" at radio station KDWB-FM's annual Jingle Ball, which took place at the Target Center in Minneapolis, Minnesota.

[66] The song was part of a set list which included "Whatcha Say", "In My Head", "Ridin' Solo", "Don't Wanna Go Home" and "Fight for You".