Who else makes notable moves on the Hot 100 this week?
Britney Spears & Iggy Azalea, "Pretty Girls"
As noted Wednesday, the collab launches at No. 29 on the Hot 100. Sales account for 77 percent of the song's chart points, as it debuts on Digital Songs at No. 6 with 96,000 first-week downloads sold, according to Nielsen Music.
According to Pop Songs chart reporter WIHT Washington, D.C. program director Tommy Chuck, "We think it will be a solid summer song." Also sure to aid its momentum: the video for "Girls" arrived Wednesday (May 13) and Spears and Azalea will perform the song on the Billboard Music Awards Sunday (May 17).
"Girls" additionally continues a tradition of superstar women teaming up for Hot 100 hits. Two by a pair of women (both in lead roles) have risen all the way to No. 1: Barbra Streisand and Donna Summer's "No More Tears (Enough Is Enough)," for two weeks in 1979, and Brandy and Monica's "The Boy Is Mine," for 13 in 1998.
Other duets of note (again, sporting equally billed co-leads, which, thus, disqualifies Madonna/Spears and Beyonce/Lady Gaga singles, among others, for the purposes of this list) include three by Whitney Houston: "When You Believe," with Mariah Carey (No. 15, 1999); "Count on Me," with CeCe Winans (No. 8, 1996); and "It Isn't, It Wasn't, It Ain't Never Gonna Be," with Aretha Franklin (a surprisingly middling, and oh-so-frustrating, No. 41, 1989).
More recent such partnerships include "Somethin' Bad," Miranda Lambert and Carrie Underwood (No. 19, 2014); "Because of You," Reba McEntire and Kelly Clarkson (No. 50, 2007); and "Beautiful Liar," Beyonce and Shakira (No. 3, 2007).
Last year, three divas joined for the No. 3-peaking "Bang Bang": Jessie J, Ariana Grande and Nicki Minaj. And, perhaps the hit with the most female star power: Christina Aguilera, Lil' Kim, Mya and Pink soared to No. 1 for five weeks in 2001 with "Lady Marmalade."
Silento, "Watch Me"
The viral rap hit climbs 38-33 on the Hot 100 with 71 percent of its activity from streaming, as it rises 14-12 on Streaming Songs (6.2 million U.S. streams, up 12 percent). It also pushes 47-40 on Digital Songs (30,000, up 16 percent).
The family band returns to the Hot 100's upper half with "Bright" (57-50). The cheery, acoustic-driven love song lifts 33-32 on Digital Songs (36,000, up 9 percent) and 47-38 on Radio Songs (31 million in all-format audience, up 13 percent). Echosmith broke through with the No. 13-peaking "Cool Kids" last year.
Shaggy, "I Need Your Love," featuring Mohombi, Faydee and Costi
The Jamaican-born reggae star (and his trademark voice) returns to the Hot 100, at No. 87, for the first time since 2001, when he ruled the chart with two classics: "It Wasn't Me" and "Angel."
Nicki Minaj, "The Night Is Still Young"
As the track debuts at No. 93, airplay is the biggest driver of Minaj's pop-leaning new single from The Pinkprint. The song is up by 54 percent to 16 million in all-format audience.