Britney Spears & Iggy Azalea's 'Pretty Girls' Headed for Top 40 Debut on Hot 100

Courtesy of RCA Records
Britney Spears & Iggy Azalea in the music video for "Pretty Girls."

The collab should make a noteworthy bow, driven by a projected 100,000 first-week downloads sold.

The pop pairing of Britney Spears and Iggy Azalea on "Pretty Girls" is off to a pretty good start.

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The single, released on RCA Records, is heading for a top 40 debut on the Billboard Hot 100 next week. (Highlights of the chart will post on Billboard.com on Wednesday, May 13, with the full chart to post the following day.) The track premiered May 4, after leaking a day earlier, and is off to a solid first week.

"Pretty Girls" already quickly shot to No. 1 on the real-time Billboard + Twitter Trending 140. Now, it looks primed to surge onto the Hot 100. Here are some numbers backing up the track's warm welcome.

100,000: "Pretty Girls" is on course to sell upward of 100,000 downloads in its first week (ending May 10), according to industry forecasters. Again, that's strong enough to propel the track onto the Hot 100, although such a sum would be off from the 174,000-download launch of Spears' last new single, "Work B**ch!," in 2013 (according to Nielsen Music).

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11.2 million: The track drew nationwide hourly plays on pop-formatted iHeartMedia-owned radio stations on May 4, helping result in 1,100 plays at the format that day. That translates to a hefty 11.2 million in first-day audience. The cut should debut in the top 25 of the Pop Songs airplay chart to post Monday (May 11).

178 percent: Also foretelling the song's Hot 100 start, Spears' social metrics grew during the ramp-up to the release (and because she injured her foot during a concert performance on April 29). She tallied a 178 percent gain in Twitter mentions in the week ending May 4, according to Next Big Sound.

"Pretty Girls" would mark Spears' 33rd career Hot 100 hit, dating to her 1998 arrival, and Azalea's 10th, after launching last year with her seven-week No. 1 "Fancy" (featuring Charli XCX). The latter song went on to reign as Billboard's No. 1 song of the summer of 2014.