What is this Christmas time cheekiness?!
But with Woody Allen and Mia Farrow's 25-year-old diplomat/lawyer/journalist son, Ronan Farrow!!
Despite the fact that someone wearing Selena's plaid shirt was seen sneaking onto Bieber's jet (it was obviously her), the former Disney princess was recently snapped smooching Ronan at his ugly sweater birthday party (above), where Katy Perry was also a guest!
Now, we doubt this cute encounter was anything more than friendly play… but Ronan does seem to be hugging Selenita rather tight!
Kitty Kat Katy also attended the event, and Ronan joked via Twitter that she was there to "chaperone".
Ch-ch-check out Katy looking TOO cute in an "ugly" sweater and glittery pants (below)!
[Image via Twitter.]