All that promotion has paid off. Nicki Minaj‘s sophomore album Pink Friday: Roman Reloaded has come in at #1 on the Billboard 200 chart.

According to Hits Daily Double, Roman Reloaded, which holds features from 2 Chainz, Nas, Young Jeezy, Lil’ Wayne, Drake, Chris Brown and Rick Ross, sold 251,551 albums in its first week. This makes the second #1 album for Nicki. (The album also came in #1 in Canada, Japan, and the UK, where it is already certified platinum.)

I’d like to thank you for making Pink Friday: ROMAN RELOADED #1 in the UK, US, Canada, and Japan. #LOVE

— Nicki Minaj (@NICKIMINAJ) April 11, 2012

Nicki will kick off her world tour on May 16 in Sydney, Australia.

In other chart news, Madonna has made history, but probably not in a way she would have hoped. The pop icon has set a record for having the biggest second week sales decrease for a #1 debuting album in chart history (and the second largest overall).

Her MDNA album sold 359,000 when it was released on March 26. But those numbers drastically changed when the album’s sales decreased 88%, selling 46,000 in its second week.

So, why the big drop? According to Forbes:

Most of Madonna’s first week sales were CDs that were included in the sale of concert tickets. That promotion artificially inflated Madonna’s numbers, putting her first before Lionel Richie and his “Tuskegee” album.

But don’t feel bad for Madonna. She’s currently working on her sold out world tour.

Previously: Watch: Nicki Minaj On Nightline; Talks Lady Gaga Comparisons