In 2003, Beyonce Knowels released her debut solo album, Dangerously in Love. The album entered the Billboard 200 at number one selling 317,000 copies in its first week. It was certified Platinum just three weeks later on June 22, 2003. Its first single, "Crazy in Love," featured a propulsive riff and a guest rap from Jay-Z, rapidly becoming one of the biggest hits of that summer, staying at number one on the Billboard Hot 100 for eight weeks. Dangerously in Love went to the top of the album charts in the UK, Canada, the Netherlands, Germany, Greece, and the Philippines, and peaked on both the U.S. Billboard 200 and R&B charts. The album has sold over five million copies in the US and over eleven million copies worldwide. When her single and album simultaneously topped the main singles charts in both the U.S. and the UK, she became the first act to achieve this feat since Men at Work in 1983, The Beatles, Simon and Garfunkel, and Rod Stewart in the 1960s and 1970s – thus becoming the first and so far, the only female artist to do so. Beyoncé was consequently one of the biggest-selling artists of 2003.[4]
Towards the end of the summer, "Baby Boy," Dangerously in Love's second single, which featured Sean Paul, began to climb the charts. It went on to become one of the biggest hits of 2003, dominating radio airplay in the autumn of 2003, and spending nine weeks at number one – one week longer than "Crazy in Love." Afterwards Beyoncé released her third solo single, "Me, Myself and I;" Dangerously in Love's fourth single, "Naughty Girl," came out in mid-2004. Both songs peaked at number three on the Billboard Hot 100.
At the 2004 Grammy Awards ceremony, Beyonce Knowels won a record-tying five Grammy Awards for her solo effort. These awards included "Best Female R&B Vocal Performance" for "Dangerously in Love," and "Best Contemporary R&B Album." Three other female artists hold this record: Lauryn Hill (1999), Alicia Keys (2002), and Norah Jones (2003). She also won a Brit Award in 2004 for "International Female Solo Artist" in the United Kingdom.
In December 2005, Beyonce Knowels released "Check on It," featuring rappers Slim Thug and (in the official remix) Bun B. The song was from the Destiny's Child's compilation, #1's and the The Pink Panther soundtrack and it was Knowles' sixth top five hit and third number one in the U.S.
At the 2006 Grammy Awards, Beyonce Knowels won a Grammy in the category of "Best R&B Performance by a Duo or Group with Vocals" for the song "So Amazing," a duet with Stevie Wonder from the Luther Vandross tribute album So Amazing: An All-Star Tribute to Luther Vandross
Beyonce Knowels sophomore album B'Day was released worldwide on September 4, 2006 and on September 5, 2006 in the U.S. to coincide with the celebration of Beyoncé's twenty-fifth birthday. In its first week the album sold more than 541,000 copies domestically, immediately coming in at number one, making it her highest-selling first week as a solo artist. This is also the highest first-week sales of any solo female artist in 2006. This record used to be held by pop singer Christina Aguilera who sold 346,000 copies of Back to Basics in its first week. In the UK, it debuted at number three with sales of 35,000 copies. "Deja Vu," the album's first single, features Jay-Z. Also with the co-production by Rodney Jerkins. Other co-producers on B'Day included Rich Harrison, The Neptunes, and Swizz Beatz. Beyonce Knowels finished work on her second studio album in two weeks. Within four weeks, the album was certified Platinum in the U.S.
The album's lead single "Deja Vu" became a top five hit in the United States and a number-one hit on the U.S. R&B chart and the UK chart, making it Beyoncé's second UK number-one single, when it climbed twenty spots to take the top spot over Shakira featuring Wyclef Jean's "Hips Don't Lie" in the week of August 27, 2006.
The second single, "Ring the Alarm," was leaked on the Internet August 8, 2006. The video for "Ring the Alarm" was released on August 16, 2006 on Yahoo.com and peaked at number one on the site's video chart. "Ring the Alarm" became Beyoncé's highest single charting debut, when it debuted at number twelve on the singles chart. Outside North America, "Irreplaceable" was released as the album's second international single in October 2006. It debuted at number fourteen on the official chart and is a number-one on the Irish chart. The single debuted at number eighty-seven on the Hot 100 and number forty-two on the Hot R&B/Hip-Hop Songs chart. The song is currently peaking at number four on the UK Top 75 Singles. The single has also been taking over on the Irish charts, as it's already in its second week at number one. "Irreplaceable" is currently at number three on the Billboard Hot 100 in just five weeks. It is Beyoncé's eighth top ten hit in the U.S. as a solo artist and 4th #1 hit on the Billboard Hot R&B Singles chart.
Beyonce Knowels won her seventh MTV VMA for "Best R&B Video" at the 2006 MTV Video Music Awards in August 31. In September 2006, Beyoncé won three awards at the UK's MOBO Awards ceremony. In November 2006, she took home an award for World's Best-Selling R&B Artist at the 2006 World Music Awards.