Caitlyn Jenner cruised around in her Porsche on Sunday, but this wasn't a solo joy ride, as she was tagging along with daughter Kylie Jenner, who was rolling in her white Ferrari. These ladies have a need for speed!

After catching up at Cait's Malibu home, the two were snapped going into the Hidden Hills estates, which is where Kris Jenner lives. With Cait's reality show airing last night (plus KUWTK), we have a feeling the whole fam might have been getting together to watch it -- and discuss some of the things that went down in New Orleans.

In last night's episode, Kris denies knowing about Cait's gender issues early on in their relationship. "There was no, 'I am transgender,'" Kris said. "It was, 'I took some stuff in the 80s, and my sperm isn't good.'" Cait, however, begged to differ. "I said I had a condition that I've been dealing with forever," she replied. "I said that I was on hormones, and that's the reason it might be tough to get pregnant. I certainly told her what was going on. I certainly said I had gender issues, and I was on hormones, and I had boobs and the whole thing." Hmm...

Anyway, earlier in the day Kylie and Cait played around with cosmetics, and of course Kylie tried out Cait's new MAC shade, Finally Free, which was shamelessly plugged by the transgender starlet. On a positive note, Cait isn't making money from this -- she states that 100% of the profits will go to transgender groups. Kylie seemed all too happy to slick it on her oversize lips, so it looks like the cosmetically enhanced father/daughter duo had a great time together:

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A video posted by Kylie Jenner Snapchats (@kylizzlesnapchats) on




Go follow @art.kylie

A video posted by Kylie Jenner Snapchats (@kylizzlesnapchats) on