is still standing toe to toe with her new beau.
Though she is said to be simply "casually dating
" rapper French Montana, the 29-year-old reality star decided to party in Las Vegas over the weekend – with her rumored boyfriend
and little sister Kylie Jenner, 16, in tow.
While Kardashian made an appearance at Beacher's Madhouse, the main event of her weekend was the boxing match between Floyd Mayweather and Marcos Maidana. The youngest Kardashian sister showed up to the fight with Montana and the two watched as Mayweather, with pal Justin Bieber
close by, took down his opponent in a close win. (Jenner and Bieber snapped a selfie
to commemorate the night.)
Following the fight, the couple stopped off at 35 Steaks + Martinis around 11:30 p.m., where Montana kept his arm around Kardashian as they led a party of 20 to a table and enjoyed dinner. Leaving the restaurant arm-in-arm, Montana calling Kardashian "baby" multiple times.
The duo then ended their evening out
's after party at the Hard Rock Hotel & Casino.