I've now finished the Baby's romper card templates, CraftArtist project file and the cutting files. They come with the same size envelope template as the Baby dress. I've used Lauren C. Waterworths With Love to make them.
CraftArtist project file http://www.mediafire.com/file/83n7vs57t8i41c4/Romper_card_and_envelope_Final.craft/file
Romper PDF http://www.mediafire.com/file/7ad4i0u2nuo73kc/Romper_card_Final.pdf/file
Cutting Files
Romper Silhouette http://www.mediafire.com/file/uaert1fd1da3xor/Romper_card_Final.studio3/file
Romper ScanNcut http://www.mediafire.com/file/wb768fbovezoak7/Romper_card.fcm/file
Romper SVG http://www.mediafire.com/file/49o2iq1bu246brq/Romper_card_Final.svg/file
Envelope Silhouette http://www.mediafire.com/file/63nwc8ucu53bwvr/Baby_envelope.studio3/file
Envelope ScanNcut http://www.mediafire.com/file/13g985rybtq7kpf/Baby_envelope.fcm/file
Envelope SVG http://www.mediafire.com/file/lezuycbcjupkeic/Baby_envelope.svg/file
Envelope PDF http://www.mediafire.com/file/3ns975lkzrgfo1k/Baby_envelope.pdf/file