LOL, Who Bought Jennifer Lopez Booty Shorts For Her Birthday?

We already know Jennifer Lopez has the best butt in showbiz. Ergo, it's safe to assume ass-inspired gifts are A+ in her book.

Such is the logic Royal Pains actor Mark Feuerstein employed when he picked out a present for J.Lo's birthday last week. (Who the hell knew these two were friends? Is J a closeted Royal Pains stan?)

[mtvn_player id="1737099" vid="1224346" autoplay="true"]

The Gossip Table reports the actor—who is actually a low-key hottie—arrived at popular Hamptons boutique What Goes Around Comes Around last week after it closed for the day. This was a major issue, because he had to pick out the perfect pair of booty shorts for his (apparently) good pal Jenny.

Thankfully, the benevolent salesgirl had a heart that day and let Mark in. He selected a pair of booty shorts covered in hand-painted daisies for Ms. Lopez. Perfect present, eh?

Afterwards, the two partied together at Jennifer's birthday bash at 1 OAK in South Hampton. SQUAD GOALS.