Conversation so far:
Was Stripped by Christina Aguilera well-received by critics?
It received mixed reviews from music critics, who viewed the employment of various musical styles incoherent, but praised Christina Aguilera's vocals
How many copies did Stripped by Christina Aguilera sell?
Christina Aguilera's album Stripped has sold over 12 million copies worldwide
Was there an accompanying tour for Christina Aguilera's Stripped album?
Christina Aguilera co-headlined the Justified and Stripped Tour alongside Justin Timberlake in 2003 in support of Stripped and Timberlake's album, before embarking on her solo Stripped Tours

Question: Did she and Justin record and/or perform any songs together?
Self-contained rewrite: Did Christina Aguilera and Justin Timberlake record and/or perform any songs together?