Kim Kardashian [1] and North West danced the night away at Katy Perry [2]'s concert in LA on Friday. The adorable mother-daughter duo [3] took selfies with Katy backstage while 4-year-old North [4] rocked a pair of glittery pink flamingo shades. Kim, who is reportedly expecting her third child with Kanye West [5] via surrogate in December, shared videos from the concert on Instagram, singing along to Katy's 2010 hit "E.T.," which was remixed by her rapper husband [6].

Kim's latest outing occurred on the same day Taylor Swift [7] dropped her sixth studio album [8], Reputation. In several of the songs, Taylor calls out Kim and Kanye [9] for leaking a recorded phone call [10] of her talking to Kanye back in 2016. There's also the fact that Katy and Taylor have been famously feuding [11] since 2014, which has some fans speculating if Kim's fun night out with Katy was just a coincidence or total shade. Read on to see another cute photo Katy took with Kim and North West ahead.