Gwen Stefani is excited to be a coach on the upcoming season 7 of The Voice. And in case you fear that this might cause tension with the the original female coach Gwen is replacing, at least temporarily, think again.

The 44-year-old No Doubt rocker took to Twitter to congratulate Christina Aguilera on her second pregnancy. “@xtina congrats on yr baby *bunny. Apollo & i cant wait to hang out w all the crazies #thevoice #surroundedbyboys.”  Gwen also included this throwback photo of the two crooners which shows them to be pretty good pals.

Christina didn’t skip a beat and wrote back: “@gwenstefani #waybackwednesday old school pic! So excited for you… #TheVoice play dates!”