Neil Patrick Harris and Elton John share another family vacation to St. Tropez

Another summer, another pilgrimage to St. Tropez for pals Elton John and Neil Patrick Harris and their respective broods. The 65-year-old singer and the 39-year-old star of "How I Met Your Mother" were spotted strolling through the streets of the ritzy resort town with their significant others on Thursday, all clad in very vacationesque uniforms of collared short-sleeve shirts, shorts, and shades. Harris, joined by fiancé David Burtka, pushed a stroller containing the couple's boy-girl twins, 22-month old Harper and Gideon, while John and husband David Furnish gave their 19-month-old son Zachary a lift. Both couples had their kids via surrogate in 2010.

Later, the couples threw life vests on their little ones and took to the sea via boat, making one very cute crew. The families took the exact same trip together last year, even hanging out at the same beach club, the trendy Le Club 55.

The Harris-Burtka clan probably brought plenty of books for the kids to do a little beach reading, considering it's one of their favorite pastimes. "They love to read, which is fantastic," Harris said on "Oprah's Next Chapter" in June. "We end each night with Good Night Moon."

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