Christina Aguilera shares birthday kiss with Kylie Jenner

Kylie Jenner helped Christina Aguilera celebrate her upcoming 36th birthday early on Saturday (10Dec16) by dressing up as the singer and planting a kiss on her lips.

Kim Kardashian's half-sister was among the guests at the musician's party and the 19-year-old decided to honor the Beautiful hitmaker by donning the barely-there black and yellow striped bra and leather pants outfit the pop superstar wore for a 2002 MTV special. Kylie also sported long blonde locks streaked with black dye, just as Christina had done for the TV performance over a decade ago, when she celebrated the release of her album Stripped.

Christina, who doesn't actually turn 36 until 18 December (16), was clearly delighted with the tribute, and happily puckered up to Kylie as they showed their affection for one another in a video clip on Snapchat.

"Happy Birthday @xtina!!!!!!" the Keeping Up with the Kardashians regular captioned the post, in which Christina wore a big pink wig, sparkly sunglasses, and colorful furry coat over an all-black ensemble.

It isn't the first time Kylie has adopted Christina's famous Stripped-era look - she also dressed up as the singer for Halloween this year (16).

The teen attended a holiday party at Los Angeles hotspot Bootsy Bellows in October (16), and recreated every detail from Christina's Dirrty video costume, complete with a red and white striped bra top, chaps, and black and white braids in her blonde hair.

"Can I be XTINA forever," Kylie captioned a video of her costume posted on Instagram.

Christina personally gave Kylie's tribute the thumbs up, sharing one of the reality star's snapshots on social media and writing, "YAASSSSS.....Killin it @kyliejenner yes to dirrty 2016!! Get it girrrl!!!"