Las Vegas, Nevada - Since becoming a grandfather last year, Floyd "Money" Mayweather Jr. has discovered a new luxury market: baby care items.

Celebrities spare no expense when it comes to their lavish lifestyle, and a $345,000 factory lime green Rolls-Royce just wasn't enough for the undefeated boxer who pimped out his new ride for the ultimate upgraded.

Mayweather decked his whip with an authentic mink fur-lined car seat for his only grandson, Kentrell Gaulden Jr., a move that set him back a whopping $18,000, according to TMZ.

Kentrell, whose father is the famous rapper NBA Youngboy, can now travel in style when he goes for a drive with grandpa!

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The mink baby car seat perfectly matches the interior of the luxury car, as shown in the video shared on Instagram by Mayweather's longtime car guy, Obi "Doctor Bugatti" Okeke.

On the head rest, the seat features "Kentrell Jr." stitched in highlighter yellow thread – making it clear to anyone who steps foot inside the luxury vehicle that the seat is already taken.

Ever since Kentrell Jr. was born, Mayweather has clearly been loving the role of grandpa – from bringing him to the boxing gym to spoiling him with lavish gifts.

His grandson was just five weeks old when the boxing legend bought him a diamond-encrusted Rolex worth about $45,000 .