Suri Cruise's Midnight Snack? An Ice Cream Sundae!

By Liz McNeil

03/16/2011 at 03:00 PM EDT

Talk about one sweet midnight snack!

Katie Holmes and daughter Suri Cruise paid a visit to one of their favorite New York spots – Serendipity – for some late-night ice cream on Tuesday night.

"There was a lot of ice cream," a source says of the visit, which found the mother-daughter duo dropping in with friends right before the restaurant closed at midnight. "Suri definitely loves ice cream, and she usually orders a hot fudge sundae."

According to the source, the group had to wait briefly for a table. Once they ordered, they sampled a variety of different sundaes, including a banana split, a butterscotch sundae, as well as a bunch of frozen hot chocolates – one of the place's signature dishes.

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Suri, 4, and Holmes, who is in the Big Apple to participate in photo shoots for her clothing line, were both "dressed gorgeously," the source says, adding that Holmes "left a very generous tip."

"She is very sweet and unassuming," the source says of Holmes, who had also brought Suri into Serendipity for ice cream the week before. "She had no problem waiting five minutes for a table. She and Suri have a great rapport."

Just before 1 a.m., the group snuck out a side door to escape from the paparazzi waiting outside.