Tom Schwartz and Katie Maloney enjoyed an over-the-top engagement party at the home of Lisa Vanderpump on Monday's episode of Vanderpump Rules.

Photo: 'Vanderpump Rules' Katie Maloney & Tom Schwartz Celebrate Valentine's Day With Throwback

After getting engaged several episdoes earlier, the longtime pair celebrated their journey to the aisle with their close friends and family, and a couple of party crashers.

"It was a nice healthy mix of excitement, joy and anticipation heading into the engagement party. I was being cheap at first but eventually loosened the purse strings," Schwartz told Bravo TV on Monday. "Having my mom there was a dream come true! Honestly the whole thing felt like a fantasy. There were moments where it was a pain in the ass, but still fantasy land."

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During the bash, after previously being informed by Vanderpump they were banned from the event, Stassi Schroeder and Kristen Doute made their enterence as guests watched in shock.

"If I'm being totally honest I was not surprised they showed up. Doute never lets a little thing like not being invited stop her and I personally invited Stassi, so yeah. I was happy to have them there! I'm a lover," Schwartz admitted.

As for Tom Sandoval's performance, Schwartz added, "I was fan-boying through the entire performance. You gotta give it up to them performing in there. Takes confidence. Mojo. I loved it."

For more of Katie Maloney and Tom Schwartz, tune into the Vanderpump Rules reunion, airing next Monday night at 9 p.m. on Bravo, and check out a clip from their engagement party below.