Beyonc Knowles partied until 4am after watching her husband Jay-Z's benefit concert on Tuesday.

The 30-year-old singer has been showing off her impressive post-pregnancy figure this week. Beyonc looked stunning in a fitted red dress on Monday evening as she attended Jay-Z's show at Carnegie Hall in New York City. She hit the town again the following night for the rapper's second live performance and dazzled in a sexy black dress.

After the concert, Beyonc and Jay-Z relaxed at his club 40/40 and the beauty was seen gushing about her month-old baby daughter Blue Ivy.

"Motherhood isn't slowing down Beyonc. She hit the town again Tuesday, lounging at Jay Z's 40/40 until 4am," reports New York Post.

"She was showing pictures on her phone," a source added to the publication.

Other stars to attend the after-party at 40/40 included Chris Rock and Russell Simmons.

Earlier in the evening, Jay-Z paid tribute to their new arrival by performing Glory the song he recorded shortly after Blue Ivy was born on January 7.

As Jay-Z gave a heartfelt rendition of the song, Beyonc was reduced to tears.

The rapper held two benefit concerts at Carnegie Hall this week to raise money for his Shawn Carter Scholarship Foundation and The United Way of New York City.